Zamazenta (Crowned Shield): Master League IV Guide

How far your IVs can slip before this Master League attacker gives up specific matchups, using its standard Master League moveset. Breakpoints, bulkpoints, CMP, and named matchups across the full best-buddy grid, over all 9 ordered shields, your-opp (0-0 .. 2-2).

Format credit: the structure, terminology, and presentation of this guide are adapted from XehrFelrose's Master League IV deep dives. In particular the "Terms to know" vocabulary (including the "Premium" vs "Thrifty" IV framing), and the per-stat by best-buddy by shield breakdown, follow XehrFelrose's work. The numbers here are independently re-simulated with this project's own engine, not taken from the video.

What this covers

Terms to know

Breakpoint
An attack-stat threshold where your fast move deals 1 more damage to a specific opponent. Most impactful on fast moves that fire every turn.
Bulkpoint
A defense-stat threshold where a specific opponent's fast move deals 1 less damage to you.
CMP (charge-move priority)
When both Pokemon throw a charged move on the same turn, the one with the higher attack stat goes first. "CMP lost" means a lower attack IV drops you below an opponent's attack, so you would lose that simultaneous-throw.
Shields (you-opp)
Shield scenarios are written you-opp (your shields first). This guide covers all 9 ordered scenarios (0-0, 0-1, 0-2, 1-0, 1-1, 1-2, 2-0, 2-1, 2-2), so "you 2 / opp 1" (2-1) is distinct from "you 1 / opp 2" (1-2). Even energy, standard movesets.
BB (best buddy)
Best-buddy boost adds one level (L50 to L51). In Master League there is no CP cap, so that level fully applies.
Premium vs Thrifty IVs
Terminology from XehrFelrose (video). Defined here mechanically, not as a gameplay call: a Premium spread drops no matchups versus a perfect (hundo) IV spread in the stated case; a Thrifty spread drops only the matchups listed next to it. Whether those matchups matter is your call.

These terms and the breakdown that follows are adapted from XehrFelrose's Master League IV deep dives.

The build

This guide assumes Zamazenta (Crowned Shield) with its standard Master League moveset. Base stats atk 250 / def 292 / hp 192.

Check my IVs

Paste one or more candidate spreads as atk/def/hp (for example 15/15/14, 15/14/15), and this builds a PvPoke-style matchups table showing only the matchups where those spreads differ. Spreads that agree everywhere are hidden, so the table stays scannable. This guide covers IVs 15 down to 12; the richest close-call detail is on spreads that drop a single stat. Enter two or more spreads and you also get a leftover-HP margin view (how much more convincingly each wins) and a ✦ marker for matchups that flip when you toggle your own best-buddy (L50 ↔ L51) in the selected Case.

Versus the Master League meta

Win/loss at a perfect IV on the 3 even shields (0-0, 1-1, 2-2), in the best buddy, vs a best-buddy meta case (you L51 vs opponents L51), vs the 61-strong Master top-60. The full per-shield picture is in the stat tables below.

Shield-dependent (split on even shields): Palkia (Origin), Kyurem (White), Xerneas, Reshiram, Kyurem (Black), Palkia (Shadow), Lugia, Meloetta (Aria), Mewtwo (Shadow), Melmetal, Primarina, Tapu Lele, Latias, Tyranitar (Shadow), Gyarados, Groudon (Shadow), Reshiram (Shadow).

What best buddy changes (at a perfect IV)

Matchups best buddy (L51) gains over not best-buddying (L50), holding the meta's best-buddy status fixed. Even shields, perfect IV.

Attack IVs

Attack at a perfect IV: 224.0 at L51 (best buddy), 222.7 at L50. Each row drops only that one stat (the other two stay 15); matchups shown are those given up versus a perfect IV.

No best buddy, vs a non-best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14221.8Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Hydreigon (Shadow)
13221.0Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Hydreigon (Shadow)
12220.2Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Groudon, Hydreigon (Shadow), Landorus (Therian)
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
14 Atk:
  • Kyurem 0-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
13 Atk:
  • Kyurem 0-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
12 Atk:
  • Groudon 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Kyurem 0-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 0-1 near-death win: still wins but barely survives, 24 HP left of 173 -- a perfect 15/15/15 keeps 63
  • Kyurem 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Marshadow 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Metagross (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)

No best buddy, vs a best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14221.8-Groudon-
13221.0-Groudon, Landorus (Therian)
12220.2KyuremReshiram, Groudon, Latias (Shadow), Dialga, Landorus (Therian)
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
14 Atk:
  • Groudon 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
13 Atk:
  • Dialga (Origin) 1-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Dialga (Origin) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Groudon 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Latios 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Necrozma (Dusk Mane) 2-1 near-death win: still wins but barely survives, 16 HP left of 173 -- a perfect 15/15/15 keeps 83
12 Atk:
  • Dialga (Origin) 1-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Dialga (Origin) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Groudon 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Latias (Shadow) 2-2 near-death win: still wins but barely survives, 25 HP left of 173 -- a perfect 15/15/15 keeps 111
  • Latios 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Melmetal 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Melmetal 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Necrozma (Dusk Mane) 2-1 near-death win: still wins but barely survives, 16 HP left of 173 -- a perfect 15/15/15 keeps 83

Best buddy, vs a non-best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14223.2-Kyurem (White), Kyurem (Black), Garchomp
13222.3Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Kyurem (White), Kyurem (Black), Garchomp, Palkia, Mewtwo
12221.5Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Kyurem (White), Kyurem (Black), Yveltal, Garchomp, Palkia, Hydreigon (Shadow), Mewtwo
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
14 Atk:
  • Ho-Oh 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Mewtwo (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
13 Atk:
  • Ho-Oh 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Kyurem 0-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Mewtwo (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Yveltal 1-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Yveltal 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Zamazenta (Crowned Shield) 1-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Zamazenta (Crowned Shield) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
12 Atk:
  • Ho-Oh 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Kyurem 0-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 1-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Kyurem 2-0 energy banked: still wins but banks 45 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 45)
  • Mewtwo (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Yveltal 1-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Yveltal 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Zamazenta (Crowned Shield) 1-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Zamazenta (Crowned Shield) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)

Best buddy, vs a best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14223.2Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Hydreigon (Shadow)
13222.3Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Hydreigon (Shadow)
12221.5Xerneas, Zamazenta (Crowned Shield), Yveltal, Meloetta (Aria)Yveltal, Groudon, Hydreigon (Shadow), Landorus (Therian)
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
14 Atk:
  • Kyurem 0-1 near-death win: still wins but barely survives, 25 HP left of 174 -- a perfect 15/15/15 keeps 64
  • Kyurem 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Metagross (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
13 Atk:
  • Kyurem 0-1 near-death win: still wins but barely survives, 25 HP left of 174 -- a perfect 15/15/15 keeps 64
  • Kyurem 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Metagross (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
12 Atk:
  • Groudon 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Kyurem 0-1 near-death win: still wins but barely survives, 25 HP left of 174 -- a perfect 15/15/15 keeps 64
  • Kyurem 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Landorus (Therian) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Metagross (Shadow) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Necrozma (Dusk Mane) 2-1 near-death win: still wins but barely survives, 18 HP left of 174 -- a perfect 15/15/15 keeps 84

Defense IVs

Defense at a perfect IV: 259.5 at L51 (best buddy), 258.0 at L50. Each row drops only that one stat (the other two stay 15); matchups shown are those given up versus a perfect IV.

No best buddy, vs a non-best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14257.1--
13256.3Kyogre, Tapu Lele-
12255.5Kyogre, Lugia (Shadow), Tapu Lele, Ho-Oh (Shadow)-

No best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14257.1Lugia (Shadow), Ho-Oh (Shadow)-
13256.3Lugia (Shadow), Ho-Oh (Shadow)-
12255.5Lugia (Shadow), Garchomp, Primarina, Ho-Oh (Shadow)
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
12 Def:
  • Garchomp 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Garchomp 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Keldeo (Ordinary) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)

Best buddy, vs a non-best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14258.7--
13257.8Gyarados
12257.0Gyarados
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
13 Def:
  • Gyarados 0-0 near-death win: still wins but barely survives, 10 HP left of 174 -- a perfect 15/15/15 keeps 38
  • Gyarados 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 1-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 1-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Hydreigon (Shadow) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
12 Def:
  • Gyarados 0-0 near-death win: still wins but barely survives, 10 HP left of 174 -- a perfect 15/15/15 keeps 38
  • Gyarados 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 1-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 1-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Hydreigon (Shadow) 2-1 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Hydreigon (Shadow) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 1 left, was 2)
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 174 -- a perfect 15/15/15 keeps 40

Best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14258.7-
13257.8Kyogre, Tapu Lele
12257.0Kyogre, Lugia (Shadow), Tapu Lele, Ho-Oh (Shadow)
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
14 Def:
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 174 -- a perfect 15/15/15 keeps 38
13 Def:
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 174 -- a perfect 15/15/15 keeps 38
12 Def:
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 174 -- a perfect 15/15/15 keeps 38

HP IVs

HP at a perfect IV: 174 at L51 (best buddy), 173 at L50. Each row drops only that one stat (the other two stay 15); matchups shown are those given up versus a perfect IV.

No best buddy, vs a non-best-buddy meta

HPHPMatchups dropped (you-opp)
14173-
13172
12171
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
13 HP:
  • Keldeo (Ordinary) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
12 HP:
  • Keldeo (Resolute) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)

No best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14173-
13172
12171
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
13 HP:
  • Keldeo (Ordinary) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
12 HP:
  • Keldeo (Resolute) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)

Best buddy, vs a non-best-buddy meta

HPHPMatchups dropped (you-opp)
14174-
13173
12172
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
13 HP:
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 9 HP left of 173 -- a perfect 15/15/15 keeps 40
12 HP:
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 172 -- a perfect 15/15/15 keeps 40

Best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14174-
13173
12172
Close calls (still a win, but the post-match margin shifts enough to matter: a shield spent, a near-death survival, or roughly one fewer charged move of energy banked)
13 HP:
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 9 HP left of 173 -- a perfect 15/15/15 keeps 38
12 HP:
  • Keldeo (Ordinary) 2-0 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Necrozma (Dusk Mane) 2-2 shield spent: keeps the win, but has to spend 1 more shield than a perfect 15/15/15 (now 0 left, was 1)
  • Sylveon 0-1 near-death win: still wins but barely survives, 8 HP left of 172 -- a perfect 15/15/15 keeps 38

Every spread with all three IVs from 12 to 15 (the practical range above the 10/10/10 legendary catch floor), sorted so the spreads that drop nothing come first. "Premium" drops no matchups versus a perfect IV in the stated case; everything else lists exactly what it gives up. The first two tables compare against a best-buddied meta (the realistic, harder case); the last two against a non-best-buddied meta, which is strictly easier.

If you best buddy (L51), vs a best-buddy meta

CP and stats at L51; drops measured in the best-buddy vs best-buddy case.

CPIVs (A/D/HP)IV %AtkDefHPDrops vs a perfect IV
477315/15/15100.00%224.0259.5174drops nothing (Premium)
476115/15/14100.00%224.0259.5174drops nothing (Premium)
476515/14/1599.67%224.0258.7174
475415/14/1499.67%224.0258.7174
475715/13/1599.35%224.0257.8174
474615/13/1499.35%224.0257.8174
475514/15/1599.62%223.2259.5174
474314/15/1499.62%223.2259.5174
475015/15/1399.43%224.0259.5173
473713/15/1599.25%222.3259.5174
472513/15/1499.25%222.3259.5174
474215/14/1399.10%224.0258.7173
474915/12/1599.02%224.0257.0174
473815/12/1499.02%224.0257.0174
473415/13/1398.78%224.0257.8173
472615/12/1398.45%224.0257.0173
474714/14/1599.30%223.2258.7174
473614/14/1499.30%223.2258.7174
473914/13/1598.97%223.2257.8174
472814/13/1498.97%223.2257.8174
472913/14/1598.92%222.3258.7174
471813/14/1498.92%222.3258.7174
471912/15/1598.87%221.5259.5174
470712/15/1498.87%221.5259.5174
472113/13/1598.60%222.3257.8174
471013/13/1498.60%222.3257.8174
473214/15/1399.05%223.2259.5173
473815/15/1298.85%224.0259.5172
472414/14/1398.73%223.2258.7173
471413/15/1398.67%222.3259.5173
473214/12/1598.65%223.2257.0174
472014/12/1498.65%223.2257.0174
471112/14/1598.55%221.5258.7174
470012/14/1498.55%221.5258.7174
473015/14/1298.53%224.0258.7172
471614/13/1398.40%223.2257.8173
470613/14/1398.35%222.3258.7173
471413/12/1598.28%222.3257.0174
470213/12/1498.28%222.3257.0174
470312/13/1598.22%221.5257.8174
469212/13/1498.22%221.5257.8174
472315/13/1298.21%224.0257.8172
470914/12/1398.08%223.2257.0173
469813/13/1398.03%222.3257.8173
469113/12/1397.71%222.3257.0173
472014/15/1298.48%223.2259.5172
469612/15/1398.30%221.5259.5173
471314/14/1298.16%223.2258.7172
470213/15/1298.10%222.3259.5172
468812/14/1397.98%221.5258.7173
469612/12/1597.90%221.5257.0174
468412/12/1497.90%221.5257.0174
471515/12/1297.88%224.0257.0172
470514/13/1297.84%223.2257.8172
469513/14/1297.78%222.3258.7172
468112/13/1397.66%221.5257.8173
468713/13/1297.47%222.3257.8172
467312/12/1397.34%221.5257.0173
468412/15/1297.73%221.5259.5172
469714/12/1297.52%223.2257.0172
467712/14/1297.41%221.5258.7172
467913/12/1297.15%222.3257.0172
466912/13/1297.09%221.5257.8172
466212/12/1296.78%221.5257.0172

If you do not best buddy (L50), vs a best-buddy meta

CP and stats at L50; drops measured in the no-best-buddy vs best-buddy case.

CPIVs (A/D/HP)IV %AtkDefHPDrops vs a perfect IV
471715/15/15100.00%222.7258.0173drops nothing (Premium)
470515/15/14100.00%222.7258.0173drops nothing (Premium)
470915/14/1599.67%222.7257.1173drops nothing (Premium)
469715/14/1499.67%222.7257.1173drops nothing (Premium)
469914/15/1599.62%221.8258.0173drops nothing (Premium)
468714/15/1499.62%221.8258.0173drops nothing (Premium)
470115/13/1599.35%222.7256.3173drops nothing (Premium)
469015/13/1499.35%222.7256.3173drops nothing (Premium)
469114/14/1599.30%221.8257.1173drops nothing (Premium)
468014/14/1499.30%221.8257.1173drops nothing (Premium)
468314/13/1598.97%221.8256.3173drops nothing (Premium)
467214/13/1498.97%221.8256.3173drops nothing (Premium)
469415/15/1399.42%222.7258.0172
467614/15/1399.05%221.8258.0172
468113/15/1599.25%221.0258.0173
0-0 Latios
467013/15/1499.25%221.0258.0173
0-0 Latios
468615/14/1399.10%222.7257.1172
467313/14/1598.92%221.0257.1173
0-0 Latios
466213/14/1498.92%221.0257.1173
0-0 Latios
467815/13/1398.77%222.7256.3172
466814/14/1398.72%221.8257.1172
466613/13/1598.60%221.0256.3173
0-0 Latios
465413/13/1498.60%221.0256.3173
0-0 Latios
466114/13/1398.40%221.8256.3172
466312/15/1598.87%220.2258.0173
0-0 Latios
465212/15/1498.87%220.2258.0173
0-0 Latios
468215/15/1298.84%222.7258.0171
1-2 Kyurem
465813/15/1398.67%221.0258.0172
466514/15/1298.47%221.8258.0171
1-2 Kyurem
469315/12/1599.02%222.7255.5173
468215/12/1499.02%222.7255.5173
467614/12/1598.65%221.8255.5173
466414/12/1498.65%221.8255.5173
465612/14/1598.55%220.2257.1173
0-0 Latios
464412/14/1498.55%220.2257.1173
0-0 Latios
467515/14/1298.52%222.7257.1171
1-2 Kyurem
465113/14/1398.35%221.0257.1172
464812/13/1598.22%220.2256.3173
0-0 Latios
463712/13/1498.22%220.2256.3173
0-0 Latios
466715/13/1298.20%222.7256.3171
1-2 Kyurem
465714/14/1298.15%221.8257.1171
1-2 Kyurem
464313/13/1398.03%221.0256.3172
464914/13/1297.83%221.8256.3171
1-2 Kyurem
467115/12/1398.45%222.7255.5172
464112/15/1398.30%220.2258.0172
464713/15/1298.10%221.0258.0171
1-2 Kyurem
465314/12/1398.08%221.8255.5172
465813/12/1598.28%221.0255.5173
464713/12/1498.28%221.0255.5173
463312/14/1397.98%220.2257.1172
463913/14/1297.78%221.0257.1171
1-2 Kyurem
462512/13/1397.66%220.2256.3172
463213/13/1297.46%221.0256.3171
1-2 Kyurem
465915/12/1297.88%222.7255.5171
1-2 Kyurem
462912/15/1297.72%220.2258.0171
463513/12/1397.71%221.0255.5172
464214/12/1297.51%221.8255.5171
1-2 Kyurem
464012/12/1597.90%220.2255.5173
462912/12/1497.90%220.2255.5173
462212/14/1297.41%220.2257.1171
461412/13/1297.09%220.2256.3171
461812/12/1397.34%220.2255.5172
462413/12/1297.14%221.0255.5171
460712/12/1296.77%220.2255.5171

If you best buddy (L51), vs a non-best-buddy meta

CP and stats at L51; drops measured in the best-buddy vs no-best-buddy-meta case.

CPIVs (A/D/HP)IV %AtkDefHPDrops vs a perfect IV
477315/15/15100.00%224.0259.5174drops nothing (Premium)
476115/15/14100.00%224.0259.5174drops nothing (Premium)
476515/14/1599.67%224.0258.7174drops nothing (Premium)
475415/14/1499.67%224.0258.7174drops nothing (Premium)
475015/15/1399.43%224.0259.5173
474215/14/1399.10%224.0258.7173
473815/15/1298.85%224.0259.5172
475514/15/1599.62%223.2259.5174
1-0 Ho-Oh
474314/15/1499.62%223.2259.5174
1-0 Ho-Oh
475715/13/1599.35%224.0257.8174
474615/13/1499.35%224.0257.8174
474714/14/1599.30%223.2258.7174
1-0 Ho-Oh
473614/14/1499.30%223.2258.7174
1-0 Ho-Oh
474915/12/1599.02%224.0257.0174
473815/12/1499.02%224.0257.0174
473015/14/1298.53%224.0258.7172
473214/15/1399.05%223.2259.5173
1-0 Ho-Oh
473415/13/1398.78%224.0257.8173
472615/12/1398.45%224.0257.0173
472414/14/1398.73%223.2258.7173
1-0 Ho-Oh
472014/15/1298.48%223.2259.5172
1-0 Ho-Oh
472315/13/1298.21%224.0257.8172
471515/12/1297.88%224.0257.0172
473914/13/1598.97%223.2257.8174
1-0 Ho-Oh
472814/13/1498.97%223.2257.8174
1-0 Ho-Oh
473214/12/1598.65%223.2257.0174
1-0 Ho-Oh
472014/12/1498.65%223.2257.0174
1-0 Ho-Oh
471314/14/1298.16%223.2258.7172
1-0 Ho-Oh
471614/13/1398.40%223.2257.8173
1-0 Ho-Oh
470914/12/1398.08%223.2257.0173
1-0 Ho-Oh
470514/13/1297.84%223.2257.8172
469714/12/1297.52%223.2257.0172
473713/15/1599.25%222.3259.5174
472513/15/1499.25%222.3259.5174
472913/14/1598.92%222.3258.7174
471813/14/1498.92%222.3258.7174
471912/15/1598.87%221.5259.5174
470712/15/1498.87%221.5259.5174
471413/15/1398.67%222.3259.5173
471112/14/1598.55%221.5258.7174
470012/14/1498.55%221.5258.7174
470613/14/1398.35%222.3258.7173
469612/15/1398.30%221.5259.5173
470213/15/1298.10%222.3259.5172
472113/13/1598.60%222.3257.8174
471013/13/1498.60%222.3257.8174
471413/12/1598.28%222.3257.0174
470213/12/1498.28%222.3257.0174
468812/14/1397.98%221.5258.7173
469513/14/1297.78%222.3258.7172
468412/15/1297.73%221.5259.5172
470312/13/1598.22%221.5257.8174
469212/13/1498.22%221.5257.8174
469813/13/1398.03%222.3257.8173
469612/12/1597.90%221.5257.0174
468412/12/1497.90%221.5257.0174
469113/12/1397.71%222.3257.0173
467712/14/1297.41%221.5258.7172
468112/13/1397.66%221.5257.8173
468713/13/1297.47%222.3257.8172
467312/12/1397.34%221.5257.0173
467913/12/1297.15%222.3257.0172
466912/13/1297.09%221.5257.8172
466212/12/1296.78%221.5257.0172

If you do not best buddy (L50), vs a non-best-buddy meta

CP and stats at L50; drops measured in the no-best-buddy vs no-best-buddy-meta case.

CPIVs (A/D/HP)IV %AtkDefHPDrops vs a perfect IV
471715/15/15100.00%222.7258.0173drops nothing (Premium)
470515/15/14100.00%222.7258.0173drops nothing (Premium)
470915/14/1599.67%222.7257.1173drops nothing (Premium)
469715/14/1499.67%222.7257.1173drops nothing (Premium)
470115/13/1599.35%222.7256.3173drops nothing (Premium)
469015/13/1499.35%222.7256.3173drops nothing (Premium)
469315/12/1599.02%222.7255.5173drops nothing (Premium)
468215/12/1499.02%222.7255.5173drops nothing (Premium)
469914/15/1599.62%221.8258.0173
468714/15/1499.62%221.8258.0173
469415/15/1399.42%222.7258.0172
469114/14/1599.30%221.8257.1173
468014/14/1499.30%221.8257.1173
468113/15/1599.25%221.0258.0173
467013/15/1499.25%221.0258.0173
468615/14/1399.10%222.7257.1172
468314/13/1598.97%221.8256.3173
467214/13/1498.97%221.8256.3173
467313/14/1598.92%221.0257.1173
466213/14/1498.92%221.0257.1173
467815/13/1398.77%222.7256.3172
467614/12/1598.65%221.8255.5173
466414/12/1498.65%221.8255.5173
466613/13/1598.60%221.0256.3173
465413/13/1498.60%221.0256.3173
465813/12/1598.28%221.0255.5173
464713/12/1498.28%221.0255.5173
467614/15/1399.05%221.8258.0172
468215/15/1298.84%222.7258.0171
466814/14/1398.72%221.8257.1172
465813/15/1398.67%221.0258.0172
467115/12/1398.45%222.7255.5172
466114/13/1398.40%221.8256.3172
465113/14/1398.35%221.0257.1172
464313/13/1398.03%221.0256.3172
466312/15/1598.87%220.2258.0173
465212/15/1498.87%220.2258.0173
465612/14/1598.55%220.2257.1173
464412/14/1498.55%220.2257.1173
467515/14/1298.52%222.7257.1171
466514/15/1298.47%221.8258.0171
464812/13/1598.22%220.2256.3173
463712/13/1498.22%220.2256.3173
464713/15/1298.10%221.0258.0171
465314/12/1398.08%221.8255.5172
464012/12/1597.90%220.2255.5173
462912/12/1497.90%220.2255.5173
463513/12/1397.71%221.0255.5172
464112/15/1398.30%220.2258.0172
466715/13/1298.20%222.7256.3171
1-2 Kyurem
465714/14/1298.15%221.8257.1171
463312/14/1397.98%220.2257.1172
463913/14/1297.78%221.0257.1171
462512/13/1397.66%220.2256.3172
465915/12/1297.88%222.7255.5171
1-2 Kyurem
464914/13/1297.83%221.8256.3171
462912/15/1297.72%220.2258.0171
463213/13/1297.46%221.0256.3171
461812/12/1397.34%220.2255.5172
464214/12/1297.51%221.8255.5171
462212/14/1297.41%220.2257.1171
462413/12/1297.14%221.0255.5171
461412/13/1297.09%220.2256.3171
460712/12/1296.77%220.2255.5171

Method and caveats

Format adapted from XehrFelrose's Master League IV deep dives; numbers independently simulated. Generated by scripts/iv_envelope_analysis.py + scripts/render_iv_envelope_article.py.
Battle engine is a Python port of PvPoke; all game data from PvPoke by Empoleon_Dynamite (MIT license). This project would not exist without it.