Shadow raid

Shadow Yamask counters

#0562

ghostShadow Tier 1

A Shadow raid boss hits harder than its normal form (Shadow Frenzy), and the Pokemon you catch afterwards is a Shadow. Purified Gems weaken it mid-fight; the simulation does not use them.

Lobby CP

3,365

600

Timer

3:00

Attack

Defense

Difficulty

0.11

Pokebattler scale

Beating Shadow Yamask should take 1 trainer with level 40 counters. Caught CP 482-561.

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 Ghost Mega — most top counters attack with Ghost

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 Shadow Yamask counters are Mega Mewtwo Y, Necrozma (Dawn Wings), Shadow Darkrai, Shadow Chandelure, Shadow Gengar & Shadow Absol.

Suggested party of sixat most one Mega

M. Mewtwo Y
Necrozma (Dawn Wings)
S. Darkrai
S. Chandelure
S. Gengar
S. Absol

5 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 Mewtwo YMegaLegendarypartyPsycho Cut / Future Sight+0.090:17
2Mega GengarMegaShadow Claw / Shadow Ball0.100:18
3Necrozma (Dawn Wings)LegendarypartyPsycho Cut / Moongeist Beam0.100:19
4Shadow DarkraiShadowLegendarypartySnarl / Foul Play0.110:19
5Shadow ChandelureShadowpartyHex / Shadow Ball0.110:19
6Shadow GengarShadowpartyLick / Shadow Ball0.110:19
7Mega HoundoomMegaSnarl / Dark Pulse+0.110:20
8Mega BanetteMegaHex / Shadow Ball0.110:20
9Mega AbsolMegaSnarl / Brutal Swing0.110:20
10Mega Mewtwo XMegaLegendaryPsycho Cut / Shadow Ball0.120:21
11Shadow AbsolShadowpartySnarl / Brutal Swing0.120:21

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

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

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Raid tier — Easy Shadow 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 countersGalarian Yamask

Raid alerts…

Top 15 Shadow 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 Mewtwo Ypsychicjoint top pick	psychicPsycho CutpsychicFuture Sight+	6,428	0:17	0.09	0.0	2573.2%
2	Mega Gengarghostpoison	ghostShadow ClawghostShadow Ball	4,336	0:18	0.10	0.0	2421.9%
3	Necrozma (Dawn Wings)psychicghost	psychicPsycho CutghostMoongeist Beam	4,099	0:19	0.10	0.0	2322.6%
4	Shadow Darkraidark	darkSnarldarkFoul Play	3,739	0:19	0.11	0.0	2294.5%
5	Shadow Chandelureghostfire	ghostHexghostShadow Ball	3,268	0:19	0.11	0.0	2275.3%
6	Shadow Gengarghostpoison	ghostLickghostShadow Ball	2,878	0:19	0.11	0.1	2242.2%
7	Mega Houndoomdarkfire	darkSnarldarkDark Pulse+	3,842	0:20	0.11	0.0	2192.7%
8	Mega Banetteghost	ghostHexghostShadow Ball	3,594	0:20	0.11	0.0	2175.5%
9	Mega Absoldark	darkSnarldarkBrutal Swing	3,301	0:20	0.11	0.0	2160.3%
10	Mega Mewtwo Xpsychicfighting	psychicPsycho CutghostShadow Ball	6,112	0:21	0.12	0.0	2111.1%
11	Shadow Absoldark	darkSnarldarkBrutal Swing	2,526	0:21	0.12	0.0	2048.6%
12	Mega Tyranitarrockdark	darkBitedarkBrutal Swing	5,347	0:22	0.12	0.0	1981.5%
13	Shadow Mewtwopsychic	psychicConfusionghostShadow Ball	4,178	0:22	0.12	0.0	1974.5%
14	Mega Greninjawaterdark	darkFeint AttackwaterSurf+	3,784	0:22	0.12	0.0	1974.2%
15	Shadow Salamencedragonflying	darkBitedarkBrutal Swing	3,749	0:22	0.12	0.0	1971.7%

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 Shadow Yamask.

Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow 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	Faints	Estimator
Random (any moveset)showing	100%	450%	2295.9%	0:19	0.0	0.11
Zen Headbutt / Shadow Ball	100%	407%	2254.7%	0:19	0.1	0.11
Astonish / Shadow Ball	100%	389%	2261.2%	0:19	0.1	0.11
Zen Headbutt / Ominous Wind	100%	488%	2285.4%	0:19	0.0	0.11
Astonish / Ominous Wind	100%	475%	2288.7%	0:19	0.0	0.11
Zen Headbutt / Dark Pulse	100%	487%	2289.6%	0:19	0.0	0.11
Astonish / Dark Pulse	100%	465%	2292.1%	0:19	0.0	0.11

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)
6/6/6floor	482	603
7/7/7	491	613
8/8/8	499	624
9/9/9	508	635
10/10/10	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 482 - 561, or 603 - 701 when the weather boosts it.

A raid encounter is level 20 (level 25 weather boosted) and cannot roll an IV below 6/6/6 — a Shadow raid's floor is 6, not the usual 10. Anything outside the first range is not this raid's reward.

Shadow raid floor. A Shadow Raid encounter rolls a minimum of 6/6/6, so this band starts at 482, not at the 516 a 10/10/10 catch would give. pokebattler.com's own page for a Shadow boss prints that 10/10/10 value as its floor — it is applying the standard-raid rule — so expect its range to start 34 CP higher than this one. LeekDuck's published band agrees with the table above.

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

Shadow 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	Faints	Win % (1)	CP	DPS	TDO
1	Mega Mewtwo Y psychicmega Psycho Cut / Future Sight+	Psycho Cut / Future Sight++26 more movesets	100%	2573.2%	0.09	0:17	0.0	100%	6,428	36.6	619
2	Mega Gengar ghostpoisonmega Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+31 more movesets	84%	2421.9%	0.10	0:18	0.0	100%	4,336	33.6	604
3	Necrozma (Dawn Wings) psychicghost Psycho Cut / Moongeist Beam	Psycho Cut / Moongeist Beam+14 more movesets	84%	2322.6%	0.10	0:19	0.0	100%	4,099	38.8	728
4	Shadow Darkrai darkshadow Snarl / Foul Play	Snarl / Foul Play+14 more movesets	91%	2294.5%	0.11	0:19	0.0	100%	3,739	31.6	601
5	Shadow Chandelure ghostfireshadow Hex / Shadow Ball	Hex / Shadow Ball+19 more movesets	76%	2275.3%	0.11	0:19	0.0	100%	3,268	32.0	612
6	Shadow Gengar ghostpoisonshadow Lick / Shadow Ball	Lick / Shadow Ball+31 more movesets	72%	2242.2%	0.11	0:19	0.1	100%	2,878	32.5	580
7	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	93%	2192.7%	0.11	0:20	0.0	100%	3,842	40.6	808
8	Mega Banette ghostmega Hex / Shadow Ball	Hex / Shadow Ball+5 more movesets	73%	2175.5%	0.11	0:20	0.0	100%	3,594	30.1	596
9	Mega Absol darkmega Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	81%	2160.3%	0.11	0:20	0.0	100%	3,301	30.7	619
10	Mega Mewtwo X psychicfightingmega Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+26 more movesets	81%	2111.1%	0.12	0:21	0.0	100%	6,112	29.7	613
11	Shadow Absol darkshadow Snarl / Brutal Swing	Snarl / Brutal Swing+9 more movesets	74%	2048.6%	0.12	0:21	0.0	100%	2,526	31.4	667
12	Mega Tyranitar rockdarkmega Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	86%	1981.5%	0.12	0:22	0.0	100%	5,347	28.8	635
13	Shadow Mewtwo psychicshadow Confusion / Shadow Ball	Confusion / Shadow Ball+23 more movesets	67%	1974.5%	0.12	0:22	0.0	100%	4,178	28.3	618
14	Mega Greninja waterdarkmega Feint Attack / Surf+	Feint Attack / Surf++17 more movesets	77%	1974.2%	0.12	0:22	0.0	100%	3,784	29.2	643
15	Shadow Salamence dragonflyingshadow Bite / Brutal Swing	Bite / Brutal Swing+20 more movesets	70%	1971.7%	0.12	0:22	0.0	100%	3,749	27.6	611
16	Shadow Hydreigon darkdragonshadow Bite / Brutal Swing	Bite / Brutal Swing+9 more movesets	78%	1961.9%	0.12	0:22	0.0	100%	3,625	30.4	675
17	Shadow Weavile darkiceshadow Snarl / Foul Play	Snarl / Foul Play+11 more movesets	73%	1939.2%	0.13	0:22	0.0	100%	3,005	28.3	636
18	Shadow Tyranitar rockdarkshadow Bite / Brutal Swing	Bite / Brutal Swing+15 more movesets	78%	1933.2%	0.13	0:23	0.0	100%	3,834	28.8	650
19	Darkrai dark Snarl / Foul Play	Snarl / Foul Play+14 more movesets	75%	1917.1%	0.13	0:23	0.0	100%	3,739	27.6	628
20	Blacephalon fireghost Astonish / Shadow Ball	Astonish / Shadow Ball+7 more movesets	62%	1908.6%	0.13	0:23	0.2	100%	3,297	27.9	576
21	Mega Alakazam psychicmega Confusion / Shadow Ball	Confusion / Shadow Ball+17 more movesets	64%	1902.1%	0.13	0:23	0.0	100%	4,510	28.4	643
22	Shadow Giratina (Origin) ghostdragonshadow Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+7 more movesets	68%	1901.2%	0.13	0:23	0.0	100%	3,683	28.5	653
23	Shadow Houndoom darkfireshadow Snarl / Foul Play	Snarl / Foul Play+14 more movesets	69%	1895.4%	0.13	0:23	0.0	100%	2,635	26.1	601
24	Mega Delphox firepsychicmega Fire Spin / Mystical Fire+	Fire Spin / Mystical Fire++23 more movesets	67%	1882.1%	0.13	0:23	0.0	100%	4,783	28.1	650
25	Lunala psychicghost Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+11 more movesets	62%	1864.7%	0.13	0:23	0.1	100%	4,042	26.0	582
26	Mega Raichu Y electricmega Spark / Zap Cannon+	Spark / Zap Cannon++35 more movesets	62%	1816.4%	0.13	0:24	0.0	100%	3,780	25.2	604
27	Necrozma (Dusk Mane) psychicsteel Metal Claw / Sunsteel Strike	Metal Claw / Sunsteel Strike+14 more movesets	64%	1806.6%	0.13	0:24	0.0	100%	4,099	25.3	610
28	Gengar ghostpoison Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+31 more movesets	56%	1803.5%	0.13	0:24	0.3	100%	2,878	25.8	538
29	Shadow Banette ghostshadow Shadow Claw / Shadow Ball	Shadow Claw / Shadow Ball+5 more movesets	54%	1767.2%	0.14	0:25	0.4	100%	2,298	25.7	493
30	Shadow Alakazam psychicshadow Psycho Cut / Shadow Ball	Psycho Cut / Shadow Ball+17 more movesets	55%	1747.8%	0.14	0:25	0.2	100%	3,057	25.6	564

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 (its Shadow boss page; the ordinary boss's page is a different, easier fight). Boss-by-boss accuracy report.

Ranked 30 attackers in 0.1 s (50 Monte Carlo runs each, seed 1). Same boss on pokebattler.com. The same ranking as JSON: /api/raids/rank.