Yamask counters

#0562

ghostTier 1

Lobby CP

3,365

600

Timer

3:00

Attack

Defense

Difficulty

0.06

Pokebattler scale

Beating Yamask should take 1 trainer with level 40 counters. Caught CP 516-561.

Weak toghost1.6xdark1.6x

Who to bring

IncludeMega Legendary Shadow

Improve your raidweather · friendship · Mega in the lobby · Party Power · Adventure EffectsShow ▾

Weather

★ boosts a type this boss is weak to

No boost Sunny or clear Rainy Partly cloudy Cloudy Windy Snow Fog ★

Friendship

every trainer in the lobby who is your friend

None Good friend (+3%)Great friend (+5%)Ultra friend (+7%)Best friend (+10%)

Mega in the lobby

a Mega boosts every trainer's attacks: 1.3x of its own type, 1.1x of others

Try a Dark Mega — most top counters attack with Dark

Party Power

Party Play: the charged move after a full meter does 2x

Off 2 trainers 3 trainers 4 trainers

Adventure Effects

only these three change a raid

Behemoth Blade (+10% attack)Behemoth Bash (+10% defense)Dynamic Punch+ (+15% attack vs Mega)

Of the game's eleven Adventure Effects only Behemoth Blade (Crowned Sword Zacian), Behemoth Bash (Crowned Shield Zamazenta) and Dynamic Punch+ (Mega Mewtwo X) change a raid; Roar of Time, Spacial Rend, Freeze Shock, Ice Burn, Sunsteel Strike, Moongeist Beam, Future Sight+ and Dynamax Cannon act outside raids. Dynamic Punch+ only counts against a Mega boss, so it changes nothing here. Sources: the full list, Behemoth Blade / Bash, Dynamic Punch+.

Best counters

Mega, Legendary, Shadow · level 40

The best Yamask counters are Mega Houndoom, Necrozma (Dawn Wings), Shadow Darkrai, Shadow Hydreigon, Shadow Tyranitar & Shadow Giratina (Origin).

Suggested party of sixat most one Mega

M. Houndoom
Necrozma (Dawn Wings)
S. Darkrai
S. Hydreigon
S. Tyranitar
S. Giratina (Origin)

3 more Megas ranked inside the top six — a party can hold only one Mega, so the best one stays and the next non-Mega takes the slot.

Ranked by Estimator (trainers needed); small print: time to winOrder byEstimatorOverall %

1Mega HoundoomMegapartySnarl / Dark Pulse+0.050:09
2Necrozma (Dawn Wings)LegendarypartyPsycho Cut / Moongeist Beam0.060:10
3Mega Mewtwo YMegaLegendaryConfusion / Future Sight+0.060:12
4Mega GengarMegaShadow Claw / Shadow Ball0.060:12
5Shadow DarkraiShadowLegendarypartySucker Punch / Foul Play0.070:12
6Shadow HydreigonShadowpartyBite / Brutal Swing0.070:12
7Mega TyranitarMegaBite / Brutal Swing0.070:12
8Shadow TyranitarShadowpartyBite / Brutal Swing0.070:12
9Shadow Giratina (Origin)ShadowLegendarypartyShadow Claw / Shadow Force0.070:13
10Mega AbsolMegaPsycho Cut / Brutal Swing0.070:13

More orders under All settings (Sort by). The top 15 in detail.

Build and order a party of six →Plan your raid lobby →

Best from your Pokebox

Pokebox

The Pokebox saved in this browser · each at its own level, IVs and moves.

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Raid tier — Solo Raid

Super Mega Legendary Super Mega Primal Mega Legendary Mega Elite Shadow Tier 5 Tier 5 Shadow Tier 3 Tier 3 Shadow Tier 1 Tier 1 Tier 4 Tier 2

Related countersShadow Yamask Galarian Yamask

Raid alerts…

Top 15 Yamask counters in detail

Click a row for damage per move, breakpoints and the energy cycle. Click a column to sort. All 30 ranked attackers, with every column, are under All settings.

Trainers1soloable

#	Attacker	Moveset
1	Mega Houndoomdarkfirejoint top pick	darkSnarldarkDark Pulse+	3,842	0:09	0.05	4637.2%
2	Necrozma (Dawn Wings)psychicghost	psychicPsycho CutghostMoongeist Beam	4,099	0:10	0.06	4359.9%
3	Mega Mewtwo Ypsychic	psychicConfusionpsychicFuture Sight+	6,428	0:12	0.06	3774.0%
4	Mega Gengarghostpoison	ghostShadow ClawghostShadow Ball	4,336	0:12	0.06	3748.7%
5	Shadow Darkraidark	darkSucker PunchdarkFoul Play	3,739	0:12	0.07	3636.1%
6	Shadow Hydreigondarkdragon	darkBitedarkBrutal Swing	3,625	0:12	0.07	3633.1%
7	Mega Tyranitarrockdark	darkBitedarkBrutal Swing	5,347	0:12	0.07	3597.1%
8	Shadow Tyranitarrockdark	darkBitedarkBrutal Swing	3,834	0:12	0.07	3487.8%
9	Shadow Giratina (Origin)ghostdragon	ghostShadow ClawghostShadow Force	3,683	0:13	0.07	3451.9%
10	Mega Absoldark	psychicPsycho CutdarkBrutal Swing	3,301	0:13	0.07	3422.0%
11	Shadow Mewtwopsychic	psychicPsycho CutghostShadow Ball	4,178	0:13	0.07	3416.7%
12	Mega Mewtwo Xpsychicfighting	psychicPsycho CutghostShadow Ball	6,112	0:13	0.07	3400.7%
13	Mega Alakazampsychic	psychicPsycho CutghostShadow Ball	4,510	0:13	0.07	3400.7%
14	Shadow Haunterghostpoison	ghostLickghostShadow Ball	1,963	0:13	0.07	3384.8%
15	Shadow Gengarghostpoison	ghostHexghostShadow Ball	2,878	0:13	0.07	3374.4%

Ordered by Estimator alone, fewest trainers needed first. . The place badge names each row's Overall place on hover.

Times are one trainer with six copies of that attacker, level 40 at 15/15/15, no weather, no friendship, no dodging, Shadow / Mega / Legendary attackers hidden — the same defaults pokebattler.com's own counter pages open with. Open the full counter tool to change any of them. "Details" opens the per-move damage, breakpoints and energy cycle against Yamask.

Estimator is how many trainers of this strength the fight needs. Power is the share of Yamask's HP that six of that attacker remove inside one raid timer, so over 100% means they finish it with time to spare. Faints is how many of the six go down inside that timer.

Hardest movesets to raid against

The same boss is a different fight depending on what it knows. Each row re-simulates the top 6 counters above against one specific moveset; the list is ordered hardest first, and clicking a row filters the whole page to that moveset — the ranking, the estimator and the share link all follow.

Boss moveset	Win % (1)	Overall	Power	Time to win	Estimator
Random (any moveset)showing	100%	1059%	3805.7%	0:11	0.06
Zen Headbutt / Dark Pulse	100%	1143%	3766.9%	0:12	0.06
Zen Headbutt / Shadow Ball	100%	1065%	3801.1%	0:11	0.06
Zen Headbutt / Ominous Wind	100%	1109%	3801.1%	0:11	0.06
Astonish / Ominous Wind	100%	1066%	3805.7%	0:11	0.06
Astonish / Dark Pulse	100%	1051%	3808.0%	0:11	0.06
Astonish / Shadow Ball	100%	964%	3850.0%	0:11	0.06

Measured over the top 6 attackers on the list above rather than by re-ranking the whole roster once per moveset — the ordering is what the table is for, and a full re-rank per moveset would cost ten times the page's whole simulation budget. Win % is the share of runs 1 trainers of those attackers finish inside the raid timer. Overall is Pokebattler's published blend on its own absolute scale (higher is easier), not a percentage of the best row the way the ranked table's Overall column is — which is why an easy boss reads well above 100% here.

Simulating each boss moveset…

Yamask weaknesses and resistances

Every one of the 18 attacking types against this boss's typing. GO multipliers: 1.6x super effective, 2.56x doubly, 0.625x resisted, 0.39x doubly resisted.

ghost1.6x dark1.6x flying1x ground1x rock1x steel1x fire1x water1x grass1x electric1x psychic1x ice1x dragon1x fairy1x poison0.63x bug0.63x normal0.39x fighting0.39x

Weak (2)
Neutral (12)
Resists (4)

It resists normal0.39xfighting0.39xpoison0.625xbug0.625x— bringing one of those is throwing damage away.

What Yamask throws at you

Its standard movepool, with the damage window a dodge has to beat.

Fast moves

Move	Power	Energy	Duration	Hits at
psychicZen Headbutt	11	+9	1.0s	0.75s
ghostAstonishSTAB	7	+13	1.0s	0.60s

Charged moves

Move	Power	Energy	Duration	Hits at
ghostShadow BallSTAB	100	-50	3.0s	2.40s
darkDark Pulse	80	-50	3.0s	1.40s
ghostOminous WindSTAB	55	-33	2.5s	2.05s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	516	646
11/11/11	525	657
12/12/12	534	668
13/13/13	543	679
14/14/14	552	690
15/15/15hundo	561	701

Caught CP range 516 - 561, or 646 - 701 when the weather boosts it.

A raid encounter is level 20 (level 25 weather boosted) and cannot roll an IV below 10/10/10. Anything outside the first range is not this raid's reward.

When it is in raids

From the raid schedule, refreshed daily.

Yamask is not on the raid schedule right now. The simulation above is still exact for the tier chosen — any boss can be simulated, current or not.

All settings

Tier 1: 600 HP, 3:00 timer, boss Attack 65 / Defense 93 (15/15/15 at tier CPM 0.5974).

Raid bossAttacker levelAttacker IVsWeatherFriendshipDodgingTrainers in the lobbyMega in the lobbyParty Play trainersBoss fast moveBoss charged moveSort by

Attackers allowed

ShadowMega and PrimalLegendary, Mythical, Ultra BeastLegacy and Elite TM moves

Share these exact settings

Every column, and pokebattler.com's own rank

On a phone the list shows estimator, time to win and faints. Overall, Power, win chance, CP, DPS and TDO appear on a wider screen.

#	Attacker	Moveset	Overall	Power	Est.Estimator	TimeTime to win	Win % (1)	CP	DPS	TDO
1	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	100%	4637.2%	0.05	0:09	100%	3,842	75.9	713
2	Necrozma (Dawn Wings) psychicghost Psycho Cut / Moongeist Beam	Psycho Cut / Moongeist Beam+14 more movesets	78%	4359.9%	0.06	0:10	100%	4,099	63.1	631
3	Mega Mewtwo Y psychicmega Confusion / Future Sight+	Confusion / Future Sight++26 more movesets	72%	3774.0%	0.06	0:12	100%	6,428	60.0	692
4	Mega Gengar ghostpoisonmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+31 more movesets	62%	3748.7%	0.06	0:12	100%	4,336	53.1	619
5	Shadow Darkrai darkshadow Sucker Punch / Foul Play	Sucker Punch / Foul Play+14 more movesets	69%	3636.1%	0.07	0:12	100%	3,739	54.4	652
6	Shadow Hydreigon darkdragonshadow Bite / Brutal Swing	Bite / Brutal Swing+9 more movesets	70%	3633.1%	0.07	0:12	100%	3,625	50.2	602
7	Mega Tyranitar rockdarkmega Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	77%	3597.1%	0.07	0:12	100%	5,347	49.8	604
8	Shadow Tyranitar rockdarkshadow Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	69%	3487.8%	0.07	0:12	100%	3,834	48.8	610
9	Shadow Giratina (Origin) ghostdragonshadow Shadow Claw / Shadow Force	Shadow Claw / Shadow Force+7 more movesets	61%	3451.9%	0.07	0:13	100%	3,683	51.4	648
10	Mega Absol darkmega Psycho Cut / Brutal Swing	Psycho Cut / Brutal Swing+9 more movesets	64%	3422.0%	0.07	0:13	100%	3,301	47.6	606
11	Shadow Mewtwo psychicshadow Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+23 more movesets	59%	3416.7%	0.07	0:13	100%	4,178	48.8	622
12	Mega Mewtwo X psychicfightingmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	65%	3400.7%	0.07	0:13	100%	6,112	54.1	693
13	Mega Alakazam psychicmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+17 more movesets	58%	3400.7%	0.07	0:13	100%	4,510	49.1	629
14	Shadow Haunter ghostpoisonshadow Lick / Shadow Ball	Lick / Shadow Ball+14 more movesets	49%	3384.8%	0.07	0:13	100%	1,963	49.1	631
15	Shadow Gengar ghostpoisonshadow Hex / Shadow Ball	Hex / Shadow Ball+31 more movesets	54%	3374.4%	0.07	0:13	100%	2,878	53.7	692
16	Shadow Weavile darkiceshadow Snarl / Foul Play	Snarl / Foul Play+11 more movesets	62%	3353.6%	0.07	0:13	100%	3,005	46.6	606
17	Gengar ghostpoison Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	53%	3263.2%	0.07	0:13	100%	2,878	47.0	627
18	Shadow Honchkrow darkflyingshadow Snarl / Dark Pulse	Snarl / Dark Pulse+7 more movesets	58%	3253.5%	0.07	0:13	100%	2,711	45.6	611
19	Shadow Absol darkshadow Snarl / Dark Pulse	Snarl / Dark Pulse+9 more movesets	57%	3253.5%	0.07	0:13	100%	2,526	46.5	623
20	Shadow Hisuian Typhlosion fireghostshadow Hex / Shadow Ball	Hex / Shadow Ball+9 more movesets	54%	3253.5%	0.07	0:13	100%	2,994	48.1	644
21	Shadow Chandelure ghostfireshadow Hex / Shadow Ball	Hex / Shadow Ball+19 more movesets	54%	3253.5%	0.07	0:13	100%	3,268	54.6	730
22	Mega Banette ghostmega Hex / Shadow Ball	Hex / Shadow Ball+5 more movesets	55%	3253.5%	0.07	0:13	100%	3,594	52.1	697
23	Blacephalon fireghost Astonish / Shadow Ball	Astonish / Shadow Ball+7 more movesets	53%	3243.8%	0.07	0:13	100%	3,297	50.6	679
24	Mega Greninja waterdarkmega Feint Attack / Surf+	Feint Attack / Surf++17 more movesets	62%	3229.4%	0.08	0:13	100%	3,784	46.1	622
25	Shadow Thundurus (Therian) electricflyingshadow Bite / Wildbolt Storm	Bite / Wildbolt Storm+9 more movesets	55%	3222.2%	0.08	0:14	100%	3,659	47.1	637
26	Kyurem (Black) dragonice Shadow Claw / Freeze Shock	Shadow Claw / Freeze Shock+11 more movesets	60%	3222.2%	0.08	0:14	100%	4,605	44.5	602
27	Darkrai dark Snarl / Shadow Ball	Snarl / Shadow Ball+14 more movesets	61%	3114.0%	0.08	0:14	100%	3,739	44.6	624
28	Chandelure ghostfire Hex / Shadow Ball	Hex / Shadow Ball+19 more movesets	52%	3114.0%	0.08	0:14	100%	3,268	44.1	618
29	Shadow Mismagius ghostshadow Sucker Punch / Shadow Ball	Sucker Punch / Shadow Ball+15 more movesets	50%	3114.0%	0.08	0:14	100%	2,615	43.0	602
30	Shadow Salamence dragonflyingshadow Bite / Brutal Swing	Bite / Brutal Swing+20 more movesets	54%	3070.2%	0.08	0:14	100%	3,749	44.4	631

How accurate is this? Same top pick as pokebattler.com on 26 of 27 lists checked, 90% of its top tens shared; weakest on Mewtwo's default list (7 of 10).

Ranking. Our full ranking against the page pokebattler.com serves for the same boss and settings, on 27 boss and filter combinations read live (2026-10-04): 242 of 270 top-ten places shared, the same #1 on 26. On the six fixed reference bosses (read 2026-10-03): 85% top-ten overlap with its default filters, 83% with Shadow, Mega and Legendary on. A close top three is shown as a tie because the order inside it is below what we can measure.

Time to win. Graded with Pokebattler's own movesets against every boss moveset, average per boss: Tier 1 and 3 +0.1% to +1.2%; Tier 5 −2.9% to +1.3%; Mega −1.1% to +2.6%; Shadow Tier 5 −1.8% to +0.3%. One attacker can be off by more: median 1.6%, worst 15%, RMS per boss moveset 2.05%.

Known weak spots.

Mewtwo (Tier 5, default filters) shares 7 of Pokebattler's top 10: Absol, Incineroar and Salamence sit just outside ours, Polteageist, Cursola and Hisuian Typhlosion just inside.
Groudon (Tier 5, default filters) shares 7 of 10; its Grass and Water counters run 2-6% fast here.
Tier 5 times run about 2-3% fast for attackers that faint often, and 2-3% slow on Mega Charizard Y and Mega Beedrill, whose counters resist the boss.
Tier 1 lists are the least checked: Combee (Tier 1) shares only 3 of Pokebattler's top 10, with Gigalith first here where Pokebattler puts Rhyperior.

This boss on pokebattler.com. Boss-by-boss accuracy report.

Ranked 30 attackers in 0.2 s (50 Monte Carlo runs each, seed 1). Same boss on pokebattler.com. The same ranking as JSON: /api/raids/rank.