Ho-Oh: 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 Ho-Oh with its standard Master League moveset. Base stats atk 239 / def 244 / hp 214.

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 60-strong Master top-60. The full per-shield picture is in the stat tables below.

Shield-dependent (split on even shields): Zygarde (Complete Forme), Ursaluna, Lugia, Lunala, Ursaluna (Shadow), Marshadow, Lugia (Shadow), Ho-Oh, Garchomp (Shadow), Keldeo (Resolute), Gyarados (Shadow), Keldeo (Ordinary), Latios (Shadow), Yveltal, Florges, Meloetta (Aria), Dialga, Kyurem, Dragonite (Shadow), Latios, Giratina (Altered), Mewtwo (Shadow), Groudon (Shadow), Hydreigon (Shadow), Latias (Shadow), Gyarados.

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.

Vs a non-best-buddy meta

Gains: Dialga 0-0, Dragonite (Shadow) 1-1, Gholdengo 0-1, Gholdengo 0-2, Goodra 1-0, Ho-Oh (Shadow) 0-1, Ho-Oh (Shadow) 1-1, Ho-Oh (Shadow) 2-2, Ho-Oh 0-0, Ho-Oh 1-0, Ho-Oh 1-1, Ho-Oh 2-2, Kyogre 2-0, Kyurem 2-1, Latias (Shadow) 0-0, Lugia (Shadow) 2-2, Primarina 0-0

Vs a best-buddy meta

Gains: Dialga 0-0, Enamorus (Therian) 1-2, Giratina (Altered) 0-0, Giratina (Altered) 1-0, Goodra 1-0, Ho-Oh 2-2, Kyogre 2-0, Kyurem (Black) 1-0, Latias (Shadow) 1-1, Lugia (Shadow) 2-2, Xerneas 1-2, Zamazenta (Crowned Shield) 0-1
Gives up: Ho-Oh (Shadow) 0-0, Ho-Oh 1-0, Lunala 2-2, Zygarde (Complete Forme) 2-1

Attack IVs

Attack at a perfect IV: 214.7 at L51 (best buddy), 213.4 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)
14212.6Ho-Oh, RillaboomMetagross, Kyurem (White), Kyurem (Black), Dialga (Shadow)
13211.8Ho-Oh, RillaboomMetagross, Kyurem (White), Kyurem (Black), Latios (Shadow), Dialga (Shadow), Mewtwo (Shadow), Togekiss
12210.9Ho-Oh, Rillaboom, GyaradosMetagross, Kyurem (White), Ursaluna, Kyurem (Black), Ursaluna (Shadow), Palkia (Shadow), Metagross (Shadow), Latios (Shadow), Dialga (Shadow), Mewtwo (Shadow), Togekiss
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:
  • Dragonite (Shadow) 0-0 near-death win: still wins but barely survives, 19 HP left of 192 -- a perfect 15/15/15 keeps 55
  • Dragonite (Shadow) 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)
  • Ho-Oh (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:
  • Dragonite (Shadow) 0-0 near-death win: still wins but barely survives, 19 HP left of 192 -- a perfect 15/15/15 keeps 55
  • Dragonite (Shadow) 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)
  • Ho-Oh (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)
  • Togekiss 2-2 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 15, was 70)
12 Atk:
  • Dragonite (Shadow) 0-0 near-death win: still wins but barely survives, 19 HP left of 192 -- a perfect 15/15/15 keeps 55
  • Dragonite (Shadow) 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)
  • Ho-Oh (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)
  • Togekiss 2-2 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 15, was 70)

No best buddy, vs a best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14212.6GyaradosPalkia (Shadow), Latios (Shadow)
13211.8GyaradosUrsaluna, Lunala, Ursaluna (Shadow), Palkia (Shadow), Metagross (Shadow), Latios (Shadow)
12210.9Lugia (Shadow), GyaradosZygarde (Complete Forme), Ursaluna, Lugia, Lunala, Ursaluna (Shadow), Marshadow, Palkia (Shadow), Metagross (Shadow), Latios (Shadow)
1-2 Lugia
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 Atk:
  • Kyurem 2-0 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 10, was 65)
12 Atk:
  • Kyurem 2-0 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 10, was 65)
  • Zygarde (Complete Forme) 2-1 near-death win: still wins but barely survives, 6 HP left of 192 -- a perfect 15/15/15 keeps 39

Best buddy, vs a non-best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14213.9-Zacian (Crowned Sword), Eternatus, Zekrom, Melmetal, Keldeo (Resolute), Keldeo (Ordinary), Gholdengo, Dragonite (Shadow)
13213.0Ho-Oh, RillaboomZacian (Crowned Sword), Kyurem (White), Eternatus, Kyurem (Black), Zekrom, Necrozma (Dusk Mane), Melmetal, Keldeo (Resolute), Keldeo (Ordinary), Dialga (Shadow), Gholdengo, Dragonite (Shadow)
12212.2Ho-Oh, RillaboomZacian (Crowned Sword), Metagross, Kyurem (White), Eternatus, Kyurem (Black), Zekrom, Necrozma (Dusk Mane), Melmetal, Keldeo (Resolute), Keldeo (Ordinary), Dialga (Shadow), Gholdengo, Dragonite (Shadow), Mewtwo (Shadow), Togekiss
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 1-1 near-death win: still wins but barely survives, 9 HP left of 193 -- a perfect 15/15/15 keeps 132
13 Atk:
  • Dragonite (Shadow) 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)
  • Dragonite (Shadow) 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)
  • 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)
  • Ho-Oh 2-1 near-death win: still wins but barely survives, 17 HP left of 193 -- a perfect 15/15/15 keeps 87
  • Ho-Oh (Shadow) 1-1 near-death win: still wins but barely survives, 1 HP left of 193 -- a perfect 15/15/15 keeps 120
  • Ho-Oh (Shadow) 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)
12 Atk:
  • Dragonite (Shadow) 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)
  • Dragonite (Shadow) 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)
  • 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)
  • Ho-Oh (Shadow) 1-1 near-death win: still wins but barely survives, 1 HP left of 193 -- a perfect 15/15/15 keeps 120
  • Ho-Oh (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)
  • Ho-Oh (Shadow) 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)
  • Togekiss 2-2 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 15, was 70)

Best buddy, vs a best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14213.9Ho-Oh, RillaboomMetagross, Kyurem (White), Kyurem (Black), Dialga (Shadow)
13213.0Ho-Oh, RillaboomMetagross, Kyurem (White), Kyurem (Black), Latios (Shadow), Dialga (Shadow), Mewtwo (Shadow), Togekiss
12212.2Ho-Oh, Rillaboom, GyaradosMetagross, Kyurem (White), Ursaluna, Kyurem (Black), Ursaluna (Shadow), Palkia (Shadow), Metagross (Shadow), Latios (Shadow), Dialga (Shadow), Mewtwo (Shadow), Togekiss
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:
  • Giratina (Altered) 2-0 near-death win: still wins but barely survives, 11 HP left of 193 -- a perfect 15/15/15 keeps 109
  • Lugia 2-1 energy banked: still wins but banks 65 less energy than a perfect 15/15/15, about one fewer charged move (now 5, was 70)
13 Atk:
  • Giratina (Altered) 2-0 near-death win: still wins but barely survives, 11 HP left of 193 -- a perfect 15/15/15 keeps 109
  • Lugia 2-1 energy banked: still wins but banks 65 less energy than a perfect 15/15/15, about one fewer charged move (now 5, was 70)
  • Togekiss 2-2 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 15, was 70)
12 Atk:
  • Giratina (Altered) 2-0 near-death win: still wins but barely survives, 11 HP left of 193 -- a perfect 15/15/15 keeps 109
  • Lugia 2-1 energy banked: still wins but banks 65 less energy than a perfect 15/15/15, about one fewer charged move (now 5, was 70)
  • Togekiss 2-2 energy banked: still wins but banks 55 less energy than a perfect 15/15/15, about one fewer charged move (now 15, was 70)

Defense IVs

Defense at a perfect IV: 218.9 at L51 (best buddy), 217.6 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)
14216.8Xerneas, Garchomp (Shadow), Enamorus (Therian)
13216.0Xerneas, Eternatus, Garchomp (Shadow), Enamorus (Therian)
12215.1Xerneas, Eternatus, Garchomp (Shadow), Enamorus (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 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)
13 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)
12 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)
  • Lunala 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)

No best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14216.8Eternatus
1-1 Latios
13216.0Eternatus
1-1 Latios
2-2 Lunala
12215.1Eternatus, Metagross (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)
13 Def:
  • Lunala 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)
12 Def:
  • Lunala 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 1-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)

Best buddy, vs a non-best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14218.1Dragonite (Shadow)
13217.2Dragonite (Shadow)
12216.4Xerneas, Garchomp (Shadow), Dragonite (Shadow), Enamorus (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 Def:
  • Dragonite (Shadow) 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)
  • Dragonite (Shadow) 2-1 shield spent: keeps the win, but has to spend 2 more shields than a perfect 15/15/15 (now 0 left, was 2)
13 Def:
  • Dragonite (Shadow) 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)
  • Dragonite (Shadow) 2-1 shield spent: keeps the win, but has to spend 2 more shields than a perfect 15/15/15 (now 0 left, was 2)
12 Def:
  • Dragonite (Shadow) 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)
  • Dragonite (Shadow) 2-1 shield spent: keeps the win, but has to spend 2 more shields than a perfect 15/15/15 (now 0 left, was 2)
  • Enamorus (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)
  • Garchomp (Shadow) 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)

Best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14218.1Xerneas, Garchomp (Shadow), Enamorus (Therian)
13217.2Xerneas, Eternatus, Garchomp (Shadow), Enamorus (Therian)
12216.4Xerneas, Eternatus, Garchomp (Shadow), Enamorus (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 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)
13 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)
12 Def:
  • Enamorus (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)
  • Garchomp (Shadow) 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)

HP IVs

HP at a perfect IV: 193 at L51 (best buddy), 192 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)
14191
13190
12189
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 HP:
  • Lunala 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)
13 HP:
  • Kyogre (Shadow) 2-0 near-death win: still wins but barely survives, 11 HP left of 190 -- a perfect 15/15/15 keeps 58
  • Lunala 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 1-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)
12 HP:
  • Kyogre (Shadow) 2-0 near-death win: still wins but barely survives, 10 HP left of 189 -- a perfect 15/15/15 keeps 58
  • Lunala 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 1-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)
  • Zacian (Crowned Sword) 0-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)

No best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14191
13190
12189
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 HP:
  • Lunala 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)
13 HP:
  • Kyogre (Shadow) 2-0 near-death win: still wins but barely survives, 11 HP left of 190 -- a perfect 15/15/15 keeps 58
  • Lunala 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 1-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)
12 HP:
  • Kyogre (Shadow) 2-0 near-death win: still wins but barely survives, 10 HP left of 189 -- a perfect 15/15/15 keeps 58
  • Lunala 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 1-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)
  • Zacian (Crowned Sword) 0-1 energy banked: still wins but banks 75 less energy than a perfect 15/15/15, about one fewer charged move (now 0, was 75)

Best buddy, vs a non-best-buddy meta

HPHPMatchups dropped (you-opp)
14192
13191
12191
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 HP:
  • Kyogre (Shadow) 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)
13 HP:
  • Kyogre (Shadow) 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)
12 HP:
  • Kyogre (Shadow) 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)

Best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14192
13191
12191
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 HP:
  • Kyogre (Shadow) 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)
13 HP:
  • Kyogre (Shadow) 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)
  • Lunala 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)
12 HP:
  • Kyogre (Shadow) 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)
  • Lunala 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)

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
442015/15/15100.00%214.7218.9193drops nothing (Premium)
441115/14/1599.61%214.7218.1193
440214/15/1599.61%213.9218.9193
2-2 Ho-Oh
438513/15/1599.21%213.0218.9193
2-2 Ho-Oh
436712/15/1598.82%212.2218.9193
2-2 Ho-Oh
441015/15/1499.48%214.7218.9192
0-0 Dialga
1-0 Goodra
2-0 Kyogre
440215/13/1599.23%214.7217.2193
0-0 Dialga
439414/14/1599.22%213.9218.1193
439415/12/1598.84%214.7216.4193
0-0 Dialga
1-0 Goodra
437613/14/1598.83%213.0218.1193
435912/14/1598.44%212.2218.1193
439214/15/1499.09%213.9218.9192
438514/13/1598.84%213.9217.2193
437513/15/1498.70%213.0218.9192
435812/15/1498.31%212.2218.9192
440115/14/1499.10%214.7218.1192
440015/15/1398.96%214.7218.9191
0-0 Dialga
2-0 Kyogre
439015/15/1298.96%214.7218.9191
0-0 Dialga
2-0 Kyogre
437714/12/1598.45%213.9216.4193
436813/13/1598.45%213.0217.2193
435012/13/1598.06%212.2217.2193
435913/12/1598.06%213.0216.4193
434212/12/1597.67%212.2216.4193
438414/14/1498.71%213.9218.1192
438314/15/1398.57%213.9218.9191
437314/15/1298.57%213.9218.9191
439315/13/1498.71%214.7217.2192
438415/12/1498.33%214.7216.4192
436713/14/1498.32%213.0218.1192
436613/15/1398.18%213.0218.9191
435613/15/1298.18%213.0218.9191
434912/14/1497.93%212.2218.1192
434812/15/1397.79%212.2218.9191
433912/15/1297.79%212.2218.9191
439215/14/1398.58%214.7218.1191
438215/14/1298.58%214.7218.1191
437514/13/1498.33%213.9217.2192
438315/13/1398.20%214.7217.2191
437315/13/1298.20%214.7217.2191
436714/12/1497.94%213.9216.4192
437515/12/1397.82%214.7216.4191
436515/12/1297.82%214.7216.4191
437414/14/1398.19%213.9218.1191
436514/14/1298.19%213.9218.1191
435813/13/1497.94%213.0217.2192
435713/14/1397.81%213.0218.1191
434713/14/1297.81%213.0218.1191
435013/12/1497.56%213.0216.4192
434112/13/1497.55%212.2217.2192
434012/14/1397.42%212.2218.1191
433012/14/1297.42%212.2218.1191
433212/12/1497.17%212.2216.4192
436614/13/1397.81%213.9217.2191
435614/13/1297.81%213.9217.2191
435714/12/1397.43%213.9216.4191
434814/12/1297.43%213.9216.4191
434913/13/1397.43%213.0217.2191
433913/13/1297.43%213.0217.2191
434013/12/1397.05%213.0216.4191
433113/12/1297.05%213.0216.4191
433112/13/1397.04%212.2217.2191
432212/13/1297.04%212.2217.2191
432312/12/1396.66%212.2216.4191
431312/12/1296.66%212.2216.4191

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
436715/15/15100.00%213.4217.6192drops nothing (Premium)
435915/14/1599.61%213.4216.8192
1-1 Latios
435014/15/1599.61%212.6217.6192
433313/15/1599.21%211.8217.6192
435015/13/1599.23%213.4216.0192
1-1 Latios
2-2 Lunala
434214/14/1599.22%212.6216.8192
432513/14/1598.83%211.8216.8192
431612/15/1598.82%210.9217.6192
1-2 Lugia
433314/13/1598.84%212.6216.0192
2-2 Lunala
431613/13/1598.45%211.8216.0192
2-2 Lunala
430712/14/1598.44%210.9216.8192
1-2 Lugia
435815/15/1499.48%213.4217.6191
1-2 Lugia
2-2 Lunala
434915/14/1499.10%213.4216.8191
1-2 Lugia
2-2 Lunala
434114/15/1499.09%212.6217.6191
1-2 Lugia
2-2 Lunala
434215/12/1598.84%213.4215.1192
1-1 Latios
2-2 Lunala
434115/13/1498.71%213.4216.0191
1-2 Lugia
2-2 Lunala
433214/14/1498.70%212.6216.8191
1-2 Lugia
2-2 Lunala
432413/15/1498.70%211.8217.6191
1-2 Lugia
2-2 Lunala
432414/13/1498.32%212.6216.0191
1-2 Lugia
2-2 Lunala
431513/14/1498.31%211.8216.8191
1-2 Lugia
2-2 Lunala
430612/15/1498.30%210.9217.6191
1-2 Lugia
2-2 Lunala
429912/13/1598.06%210.9216.0192
1-2 Lugia
2-2 Lunala
430713/13/1497.93%211.8216.0191
1-2 Lugia
2-2 Lunala
429812/14/1497.92%210.9216.8191
1-2 Lugia
2-2 Lunala
429012/13/1497.55%210.9216.0191
1-2 Lugia
2-2 Lunala
432514/12/1598.45%212.6215.1192
2-2 Lunala
430813/12/1598.06%211.8215.1192
2-2 Lunala
429112/12/1597.67%210.9215.1192
2-2 Lunala
433315/12/1498.33%213.4215.1191
2-2 Lunala
431514/12/1497.94%212.6215.1191
2-2 Lunala
429813/12/1497.55%211.8215.1191
2-2 Lunala
428112/12/1497.17%210.9215.1191
2-2 Lunala
434815/15/1398.96%213.4217.6190
2-2 Lunala
434015/14/1398.58%213.4216.8190
2-2 Lunala
433114/15/1398.57%212.6217.6190
2-2 Lunala
433915/15/1298.44%213.4217.6189
2-2 Lunala
433115/13/1398.19%213.4216.0190
2-2 Lunala
432314/14/1398.19%212.6216.8190
2-2 Lunala
431413/15/1398.18%211.8217.6190
2-2 Lunala
433015/14/1298.06%213.4216.8189
2-2 Lunala
432214/15/1298.05%212.6217.6189
2-2 Lunala
432315/12/1397.81%213.4215.1190
2-2 Lunala
431414/13/1397.81%212.6216.0190
2-2 Lunala
430613/14/1397.80%211.8216.8190
2-2 Lunala
429712/15/1397.79%210.9217.6190
2-2 Lunala
431314/14/1297.67%212.6216.8189
2-2 Lunala
430513/15/1297.66%211.8217.6189
2-2 Lunala
430614/12/1397.43%212.6215.1190
2-2 Lunala
429713/13/1397.42%211.8216.0190
2-2 Lunala
428912/14/1397.41%210.9216.8190
2-2 Lunala
429613/14/1297.29%211.8216.8189
2-2 Lunala
428712/15/1297.27%210.9217.6189
2-2 Lunala
428913/12/1397.04%211.8215.1190
2-2 Lunala
428012/13/1397.03%210.9216.0190
2-2 Lunala
427912/14/1296.90%210.9216.8189
2-2 Lunala
427212/12/1396.66%210.9215.1190
2-2 Lunala
432215/13/1297.68%213.4216.0189
430514/13/1297.29%212.6216.0189
428813/13/1296.91%211.8216.0189
427112/13/1296.52%210.9216.0189
431315/12/1297.30%213.4215.1189
429614/12/1296.91%212.6215.1189
427913/12/1296.53%211.8215.1189
426312/12/1296.15%210.9215.1189

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
442015/15/15100.00%214.7218.9193drops nothing (Premium)
440214/15/1599.61%213.9218.9193
2-1 Kyurem
441115/14/1599.61%214.7218.1193
2-2 Lunala
440215/13/1599.23%214.7217.2193
2-2 Lunala
441015/15/1499.48%214.7218.9192
2-0 Kyogre
439414/14/1599.22%213.9218.1193
2-1 Kyurem
2-2 Lunala
438513/15/1599.21%213.0218.9193
2-1 Kyurem
438514/13/1598.84%213.9217.2193
2-1 Kyurem
2-2 Lunala
439214/15/1499.09%213.9218.9192
2-0 Kyogre
2-1 Kyurem
440115/14/1499.10%214.7218.1192
436712/15/1598.82%212.2218.9193
440015/15/1398.96%214.7218.9191
439015/15/1298.96%214.7218.9191
439415/12/1598.84%214.7216.4193
438414/14/1498.71%213.9218.1192
439315/13/1498.71%214.7217.2192
438314/15/1398.57%213.9218.9191
437314/15/1298.57%213.9218.9191
437714/12/1598.45%213.9216.4193
437514/13/1498.33%213.9217.2192
437613/14/1598.83%213.0218.1193
437513/15/1498.70%213.0218.9192
436813/13/1598.45%213.0217.2193
439215/14/1398.58%214.7218.1191
438215/14/1298.58%214.7218.1191
435912/14/1598.44%212.2218.1193
438415/12/1498.33%214.7216.4192
436713/14/1498.32%213.0218.1192
435812/15/1498.31%212.2218.9192
438315/13/1398.20%214.7217.2191
437315/13/1298.20%214.7217.2191
435012/13/1598.06%212.2217.2193
436613/15/1398.18%213.0218.9191
435613/15/1298.18%213.0218.9191
435913/12/1598.06%213.0216.4193
434912/14/1497.93%212.2218.1192
437414/14/1398.19%213.9218.1191
436514/14/1298.19%213.9218.1191
436714/12/1497.94%213.9216.4192
435813/13/1497.94%213.0217.2192
436614/13/1397.81%213.9217.2191
435614/13/1297.81%213.9217.2191
434812/15/1397.79%212.2218.9191
433912/15/1297.79%212.2218.9191
434212/12/1597.67%212.2216.4193
434112/13/1497.55%212.2217.2192
437515/12/1397.82%214.7216.4191
436515/12/1297.82%214.7216.4191
435713/14/1397.81%213.0218.1191
434713/14/1297.81%213.0218.1191
435013/12/1497.56%213.0216.4192
434913/13/1397.43%213.0217.2191
433913/13/1297.43%213.0217.2191
435714/12/1397.43%213.9216.4191
434814/12/1297.43%213.9216.4191
434012/14/1397.42%212.2218.1191
433012/14/1297.42%212.2218.1191
433212/12/1497.17%212.2216.4192
433112/13/1397.04%212.2217.2191
432212/13/1297.04%212.2217.2191
434013/12/1397.05%213.0216.4191
433113/12/1297.05%213.0216.4191
432312/12/1396.66%212.2216.4191
431312/12/1296.66%212.2216.4191

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
436715/15/15100.00%213.4217.6192drops nothing (Premium)
435915/14/1599.61%213.4216.8192
435014/15/1599.61%212.6217.6192
433313/15/1599.21%211.8217.6192
431612/15/1598.82%210.9217.6192
435815/15/1499.48%213.4217.6191
2-2 Lunala
435015/13/1599.23%213.4216.0192
434214/14/1599.22%212.6216.8192
434114/15/1499.09%212.6217.6191
434815/15/1398.96%213.4217.6190
434215/12/1598.84%213.4215.1192
432513/14/1598.83%211.8216.8192
430712/14/1598.44%210.9216.8192
434915/14/1499.10%213.4216.8191
432413/15/1498.70%211.8217.6191
430612/15/1498.30%210.9217.6191
433314/13/1598.84%212.6216.0192
434115/13/1498.71%213.4216.0191
433315/12/1498.33%213.4215.1191
433114/15/1398.57%212.6217.6190
432514/12/1598.45%212.6215.1192
431613/13/1598.45%211.8216.0192
433915/15/1298.44%213.4217.6189
429912/13/1598.06%210.9216.0192
433214/14/1498.70%212.6216.8191
434015/14/1398.58%213.4216.8190
431513/14/1498.31%211.8216.8191
431413/15/1398.18%211.8217.6190
430813/12/1598.06%211.8215.1192
429812/14/1497.92%210.9216.8191
429712/15/1397.79%210.9217.6190
429112/12/1597.67%210.9215.1192
432414/13/1498.32%212.6216.0191
433115/13/1398.19%213.4216.0190
433015/14/1298.06%213.4216.8189
431514/12/1497.94%212.6215.1191
430713/13/1497.93%211.8216.0191
432315/12/1397.81%213.4215.1190
432215/13/1297.68%213.4216.0189
429813/12/1497.55%211.8215.1191
429012/13/1497.55%210.9216.0191
431315/12/1297.30%213.4215.1189
428112/12/1497.17%210.9215.1191
432214/15/1298.05%212.6217.6189
430513/15/1297.66%211.8217.6189
428712/15/1297.27%210.9217.6189
432314/14/1398.19%212.6216.8190
430613/14/1397.80%211.8216.8190
428912/14/1397.41%210.9216.8190
431414/13/1397.81%212.6216.0190
431314/14/1297.67%212.6216.8189
430614/12/1397.43%212.6215.1190
429713/13/1397.42%211.8216.0190
430514/13/1297.29%212.6216.0189
429613/14/1297.29%211.8216.8189
428913/12/1397.04%211.8215.1190
428012/13/1397.03%210.9216.0190
429614/12/1296.91%212.6215.1189
428813/13/1296.91%211.8216.0189
427912/14/1296.90%210.9216.8189
427212/12/1396.66%210.9215.1190
427913/12/1296.53%211.8215.1189
427112/13/1296.52%210.9216.0189
426312/12/1296.15%210.9215.1189

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.