Dialga: 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 Dialga with its standard Master League moveset. Base stats atk 275 / def 211 / hp 205.

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), Lunala, Kyurem (Black), Zekrom, Eternatus, Palkia (Shadow), Necrozma (Dawn Wings), Garchomp (Shadow), Garchomp, Ho-Oh, Zygarde (Complete Forme), Latios, Latios (Shadow), Gholdengo, Solgaleo, Latias (Shadow), Keldeo (Resolute), Togekiss, Kyurem, Annihilape (Shadow), Latias, Dragonite (Shadow), Goodra, Keldeo (Ordinary), Sylveon, Tyranitar (Shadow), Landorus (Therian), Groudon (Shadow), Annihilape, 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.

Vs a non-best-buddy meta

Gains: Dialga (Shadow) 0-0, Dialga (Shadow) 1-1, Dialga (Shadow) 2-2, Dialga 0-0, Dialga 1-1, Dialga 2-2, Latias (Shadow) 2-2, Lugia 0-1, Reshiram (Shadow) 0-0, Reshiram 0-0, Reshiram 1-1, Reshiram 2-2, Zekrom 2-2

Vs a best-buddy meta

Gains: Annihilape 2-1, Dialga (Shadow) 0-0, Dialga (Shadow) 1-1, Dialga (Shadow) 2-2, Mewtwo (Shadow) 2-2, Reshiram (Shadow) 0-0

Attack IVs

Attack at a perfect IV: 245.1 at L51 (best buddy), 243.7 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)
14242.8Reshiram, Zekrom, DialgaDialga
0-0 Ho-Oh
13242.0Reshiram, Zekrom, DialgaDialga
0-0 Ho-Oh
12241.2Reshiram, Zekrom, DialgaDialga
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 Atk:
  • Kyurem (Black) 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)
  • Kyurem (Black) 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)
  • Kyurem (White) 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)
  • Kyurem (White) 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)
  • 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)
14242.8---
13242.0-Gyarados (Shadow)
12241.2-Gyarados (Shadow)

Best buddy, vs a non-best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14244.3Latias (Shadow)--
13243.4Reshiram, Zekrom, Latias (Shadow), DialgaLatias (Shadow), Dialga
12242.6Reshiram, Zekrom, Latias (Shadow), DialgaLatias (Shadow), Dialga

Best buddy, vs a best-buddy meta

AtkAttackCMP lostBreakpoint lostMatchups dropped (you-opp)
14244.3Reshiram, Zekrom, DialgaDialga
13243.4Reshiram, Zekrom, DialgaDialga
12242.6Reshiram, Zekrom, DialgaDialga

Defense IVs

Defense at a perfect IV: 191.0 at L51 (best buddy), 189.9 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)
14189.1-
13188.2-
12187.4-

No best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14189.1-
13188.2-
12187.4Dialga (Origin), Groudon (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:
  • Dialga (Origin) 1-1 near-death win: still wins but barely survives, 23 HP left of 184 -- a perfect 15/15/15 keeps 52

Best buddy, vs a non-best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14190.2Sylveon, Ho-Oh (Shadow)
0-1 Lugia
13189.3Reshiram, Zekrom, Dialga, Sylveon, Ho-Oh (Shadow)
0-1 Lugia
12188.5Reshiram, Zekrom, Dialga, Sylveon, Ho-Oh (Shadow)
0-1 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 Def:
  • Dialga 1-1 near-death win: still wins but barely survives, 24 HP left of 185 -- a perfect 15/15/15 keeps 53
12 Def:
  • Dialga 1-1 near-death win: still wins but barely survives, 23 HP left of 185 -- a perfect 15/15/15 keeps 53

Best buddy, vs a best-buddy meta

DefDefenseBulkpoint lostMatchups dropped (you-opp)
14190.2--
13189.3--
12188.5-

HP IVs

HP at a perfect IV: 185 at L51 (best buddy), 184 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)
14184-
13183
12182

No best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14184-
13183
12182

Best buddy, vs a non-best-buddy meta

HPHPMatchups dropped (you-opp)
14185-
13184
0-1 Lugia
12183

Best buddy, vs a best-buddy meta

HPHPMatchups dropped (you-opp)
14185-
13184-
12183

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
462015/15/15100.00%245.1191.0185drops nothing (Premium)
460915/15/14100.00%245.1191.0185drops nothing (Premium)
461015/14/1599.56%245.1190.2185drops nothing (Premium)
459915/14/1499.56%245.1190.2185drops nothing (Premium)
459915/15/1399.46%245.1191.0184drops nothing (Premium)
459915/13/1599.12%245.1189.3185drops nothing (Premium)
458915/13/1499.12%245.1189.3185drops nothing (Premium)
458915/14/1399.02%245.1190.2184
458815/15/1298.92%245.1191.0183
458915/12/1598.67%245.1188.5185
457915/12/1498.67%245.1188.5185
457915/13/1398.58%245.1189.3184
457815/14/1298.48%245.1190.2183
456815/12/1398.14%245.1188.5184
456815/13/1298.04%245.1189.3183
455815/12/1297.61%245.1188.5183
460414/15/1599.66%244.3191.0185
459414/15/1499.66%244.3191.0185
458813/15/1599.31%243.4191.0185
457813/15/1499.31%243.4191.0185
459414/14/1599.21%244.3190.2185
458314/14/1499.21%244.3190.2185
458314/15/1399.12%244.3191.0184
457212/15/1598.97%242.6191.0185
456212/15/1498.97%242.6191.0185
457813/14/1598.87%243.4190.2185
456813/14/1498.87%243.4190.2185
458414/13/1598.77%244.3189.3185
457314/13/1498.77%244.3189.3185
456713/15/1398.77%243.4191.0184
456212/14/1598.53%242.6190.2185
455212/14/1498.53%242.6190.2185
456813/13/1598.43%243.4189.3185
455713/13/1498.43%243.4189.3185
455112/15/1398.43%242.6191.0184
455212/13/1598.09%242.6189.3185
454212/13/1498.09%242.6189.3185
457314/14/1398.68%244.3190.2184
457314/15/1298.58%244.3191.0183
455713/14/1398.34%243.4190.2184
457314/12/1598.33%244.3188.5185
456314/12/1498.33%244.3188.5185
455713/15/1298.24%243.4191.0183
454112/14/1398.00%242.6190.2184
455813/12/1597.99%243.4188.5185
454713/12/1497.99%243.4188.5185
454112/15/1297.90%242.6191.0183
454212/12/1597.65%242.6188.5185
453112/12/1497.65%242.6188.5185
456314/13/1398.24%244.3189.3184
456214/14/1298.14%244.3190.2183
454713/13/1397.90%243.4189.3184
455314/12/1397.80%244.3188.5184
454713/14/1297.80%243.4190.2183
455214/13/1297.71%244.3189.3183
453112/13/1397.56%242.6189.3184
453713/12/1397.46%243.4188.5184
453112/14/1297.46%242.6190.2183
454214/12/1297.27%244.3188.5183
452112/12/1397.12%242.6188.5184
453613/13/1297.37%243.4189.3183
452112/13/1297.03%242.6189.3183
452613/12/1296.93%243.4188.5183
451112/12/1296.60%242.6188.5183

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
456515/15/15100.00%243.7189.9184drops nothing (Premium)
455515/15/14100.00%243.7189.9184drops nothing (Premium)
455014/15/1599.66%242.8189.9184drops nothing (Premium)
453914/15/1499.66%242.8189.9184drops nothing (Premium)
455515/14/1599.56%243.7189.1184
454515/14/1499.56%243.7189.1184
454515/15/1399.46%243.7189.9183
453413/15/1599.31%242.0189.9184
452413/15/1499.31%242.0189.9184
454014/14/1599.21%242.8189.1184
452914/14/1499.21%242.8189.1184
454515/13/1599.12%243.7188.2184
453515/13/1499.12%243.7188.2184
452914/15/1399.11%242.8189.9183
453515/14/1399.02%243.7189.1183
451812/15/1598.97%241.2189.9184
450812/15/1498.97%241.2189.9184
453415/15/1298.91%243.7189.9182
453014/13/1598.77%242.8188.2184
451914/13/1498.77%242.8188.2184
452515/13/1398.58%243.7188.2183
452413/14/1598.87%242.0189.1184
451413/14/1498.87%242.0189.1184
451313/15/1398.77%242.0189.9183
451914/14/1398.68%242.8189.1183
453515/12/1598.67%243.7187.4184
452515/12/1498.67%243.7187.4184
451914/15/1298.57%242.8189.9182
450812/14/1598.53%241.2189.1184
449812/14/1498.53%241.2189.1184
451413/13/1598.43%242.0188.2184
450413/13/1498.43%242.0188.2184
449812/15/1398.43%241.2189.9183
450914/13/1398.24%242.8188.2183
449812/13/1598.09%241.2188.2184
448812/13/1498.09%241.2188.2184
452415/14/1298.48%243.7189.1182
1-1 Latios
450313/14/1398.33%242.0189.1183
451914/12/1598.33%242.8187.4184
450914/12/1498.33%242.8187.4184
450313/15/1298.23%242.0189.9182
451415/12/1398.14%243.7187.4183
1-1 Latios
451415/13/1298.04%243.7188.2182
1-1 Latios
448812/14/1397.99%241.2189.1183
449313/13/1397.90%242.0188.2183
448712/15/1297.89%241.2189.9182
447812/13/1397.56%241.2188.2183
450914/14/1298.14%242.8189.1182
1-1 Latios
450413/12/1597.99%242.0187.4184
449413/12/1497.99%242.0187.4184
449914/12/1397.80%242.8187.4183
1-1 Latios
449914/13/1297.70%242.8188.2182
1-1 Latios
448812/12/1597.65%241.2187.4184
447812/12/1497.65%241.2187.4184
450415/12/1297.60%243.7187.4182
1-1 Latios
449313/14/1297.80%242.0189.1182
448313/12/1397.46%242.0187.4183
447712/14/1297.46%241.2189.1182
448313/13/1297.36%242.0188.2182
448814/12/1297.26%242.8187.4182
446812/12/1397.12%241.2187.4183
446712/13/1297.02%241.2188.2182
447313/12/1296.93%242.0187.4182
445712/12/1296.59%241.2187.4182

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
462015/15/15100.00%245.1191.0185drops nothing (Premium)
460915/15/14100.00%245.1191.0185drops nothing (Premium)
460414/15/1599.66%244.3191.0185drops nothing (Premium)
459414/15/1499.66%244.3191.0185drops nothing (Premium)
461015/14/1599.56%245.1190.2185
0-1 Lugia
459915/14/1499.56%245.1190.2185
0-1 Lugia
459915/15/1399.46%245.1191.0184
0-1 Lugia
459414/14/1599.21%244.3190.2185
0-1 Lugia
458314/14/1499.21%244.3190.2185
0-1 Lugia
458314/15/1399.12%244.3191.0184
0-1 Lugia
458915/14/1399.02%245.1190.2184
0-1 Lugia
457314/14/1398.68%244.3190.2184
0-1 Lugia
459915/13/1599.12%245.1189.3185
0-1 Lugia
458915/13/1499.12%245.1189.3185
0-1 Lugia
458815/15/1298.92%245.1191.0183
0-1 Lugia
458414/13/1598.77%244.3189.3185
0-1 Lugia
457314/13/1498.77%244.3189.3185
0-1 Lugia
458915/12/1598.67%245.1188.5185
0-1 Lugia
457915/12/1498.67%245.1188.5185
0-1 Lugia
457314/15/1298.58%244.3191.0183
0-1 Lugia
457815/14/1298.48%245.1190.2183
0-1 Lugia
457314/12/1598.33%244.3188.5185
0-1 Lugia
456314/12/1498.33%244.3188.5185
0-1 Lugia
456214/14/1298.14%244.3190.2183
0-1 Lugia
457915/13/1398.58%245.1189.3184
0-1 Lugia
456314/13/1398.24%244.3189.3184
0-1 Lugia
456815/12/1398.14%245.1188.5184
0-1 Lugia
456815/13/1298.04%245.1189.3183
0-1 Lugia
455314/12/1397.80%244.3188.5184
0-1 Lugia
455214/13/1297.71%244.3189.3183
0-1 Lugia
455815/12/1297.61%245.1188.5183
0-1 Lugia
454214/12/1297.27%244.3188.5183
0-1 Lugia
458813/15/1599.31%243.4191.0185
457813/15/1499.31%243.4191.0185
457212/15/1598.97%242.6191.0185
456212/15/1498.97%242.6191.0185
457813/14/1598.87%243.4190.2185
456813/14/1498.87%243.4190.2185
456713/15/1398.77%243.4191.0184
456212/14/1598.53%242.6190.2185
455212/14/1498.53%242.6190.2185
455112/15/1398.43%242.6191.0184
455713/14/1398.34%243.4190.2184
454112/14/1398.00%242.6190.2184
455713/15/1298.24%243.4191.0183
454112/15/1297.90%242.6191.0183
454713/14/1297.80%243.4190.2183
453112/14/1297.46%242.6190.2183
456813/13/1598.43%243.4189.3185
455713/13/1498.43%243.4189.3185
455212/13/1598.09%242.6189.3185
454212/13/1498.09%242.6189.3185
455813/12/1597.99%243.4188.5185
454713/12/1497.99%243.4188.5185
454212/12/1597.65%242.6188.5185
453112/12/1497.65%242.6188.5185
454713/13/1397.90%243.4189.3184
453112/13/1397.56%242.6189.3184
453713/12/1397.46%243.4188.5184
453613/13/1297.37%243.4189.3183
452112/12/1397.12%242.6188.5184
452112/13/1297.03%242.6189.3183
452613/12/1296.93%243.4188.5183
451112/12/1296.60%242.6188.5183

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
456515/15/15100.00%243.7189.9184drops nothing (Premium)
455515/15/14100.00%243.7189.9184drops nothing (Premium)
455014/15/1599.66%242.8189.9184
0-0 Ho-Oh
453914/15/1499.66%242.8189.9184
0-0 Ho-Oh
453413/15/1599.31%242.0189.9184
0-0 Ho-Oh
452413/15/1499.31%242.0189.9184
0-0 Ho-Oh
455515/14/1599.56%243.7189.1184
454515/14/1499.56%243.7189.1184
454515/15/1399.46%243.7189.9183
451812/15/1598.97%241.2189.9184
450812/15/1498.97%241.2189.9184
453415/15/1298.91%243.7189.9182
454014/14/1599.21%242.8189.1184
0-0 Ho-Oh
452914/14/1499.21%242.8189.1184
0-0 Ho-Oh
454515/13/1599.12%243.7188.2184
453515/13/1499.12%243.7188.2184
452914/15/1399.11%242.8189.9183
453515/14/1399.02%243.7189.1183
452413/14/1598.87%242.0189.1184
0-0 Ho-Oh
451413/14/1498.87%242.0189.1184
0-0 Ho-Oh
451313/15/1398.77%242.0189.9183
453515/12/1598.67%243.7187.4184
452515/12/1498.67%243.7187.4184
452515/13/1398.58%243.7188.2183
451914/15/1298.57%242.8189.9182
452415/14/1298.48%243.7189.1182
450313/15/1298.23%242.0189.9182
451415/12/1398.14%243.7187.4183
453014/13/1598.77%242.8188.2184
451914/13/1498.77%242.8188.2184
451914/14/1398.68%242.8189.1183
450812/14/1598.53%241.2189.1184
449812/14/1498.53%241.2189.1184
451413/13/1598.43%242.0188.2184
450413/13/1498.43%242.0188.2184
449812/15/1398.43%241.2189.9183
450313/14/1398.33%242.0189.1183
451914/12/1598.33%242.8187.4184
450914/12/1498.33%242.8187.4184
450914/13/1398.24%242.8188.2183
450914/14/1298.14%242.8189.1182
451415/13/1298.04%243.7188.2182
1-1 Latios
450413/12/1597.99%242.0187.4184
449413/12/1497.99%242.0187.4184
449313/13/1397.90%242.0188.2183
448712/15/1297.89%241.2189.9182
449914/12/1397.80%242.8187.4183
449313/14/1297.80%242.0189.1182
448313/12/1397.46%242.0187.4183
449812/13/1598.09%241.2188.2184
448812/13/1498.09%241.2188.2184
448812/14/1397.99%241.2189.1183
449914/13/1297.70%242.8188.2182
1-1 Latios
448812/12/1597.65%241.2187.4184
447812/12/1497.65%241.2187.4184
450415/12/1297.60%243.7187.4182
1-1 Latios
447812/13/1397.56%241.2188.2183
447712/14/1297.46%241.2189.1182
448313/13/1297.36%242.0188.2182
1-1 Latios
446812/12/1397.12%241.2187.4183
448814/12/1297.26%242.8187.4182
1-1 Latios
446712/13/1297.02%241.2188.2182
1-1 Latios
447313/12/1296.93%242.0187.4182
1-1 Latios
445712/12/1296.59%241.2187.4182
1-1 Latios

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.