Castform (Sunny) counters

#0351

fireElite

Lobby CP

27,026

20,000

Timer

5:00

Attack

151

Defense

151

Difficulty

2.13

Pokebattler scale

Beating Castform (Sunny) should take 2 trainers with level 40 counters. Caught CP 875-932.

Weak toground1.6xrock1.6xwater1.6x

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 Water Mega — most top counters attack with Water

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 Castform (Sunny) counters are Mega Greninja, Shadow Landorus (Therian), Shadow Kyogre, Shadow Groudon, Shadow Gigalith & Shadow Tyrantrum.

Suggested party of sixat most one Mega

M. Greninja
S. Landorus (Therian)
S. Kyogre
S. Groudon
S. Gigalith
S. Tyrantrum

8 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 GreninjaMegapartyWater Shuriken / Surf+1.918:48
2Mega StarmieMegaPsywave / Liquidation+2.029:18
3Primal GroudonMegaLegendaryMud Shot / Precipice Blades2.139:47
4Primal KyogreMegaLegendaryWaterfall / Origin Pulse2.1910:06
5Mega Mewtwo YMegaLegendaryPsycho Cut / Future Sight+2.2110:11
6Shadow Landorus (Therian)ShadowLegendarypartyMud Shot / Sandsear Storm2.2310:17
7Shadow KyogreShadowLegendarypartyWaterfall / Origin Pulse2.3210:41
8Mega GarchompMegaMud Shot / Earth Power2.3210:41
9Mega Mewtwo XMegaLegendaryPsycho Cut / Dynamic Punch+2.3810:56
10Mega DiancieMegaLegendaryRock Throw / Rock Slide2.4411:13
11Shadow GroudonShadowLegendarypartyMud Shot / Precipice Blades2.4611:20
13Shadow GigalithShadowpartyLock-On / Meteor Beam2.5411:41
14Shadow TyrantrumShadowpartyRock Throw / Meteor Beam2.6011:57

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

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

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Raid tier — Elite 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

Raid alerts…

Top 15 Castform (Sunny) 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.

Trainers2duo

#	Attacker	Moveset
1	Mega Greninjawaterdarkjoint top pick	waterWater ShurikenwaterSurf+	3,784	8:48	1.91	6.0	57.5%
2	Mega Starmiewaterpsychic	psychicPsywavewaterLiquidation+	3,701	9:18	2.02	5.9	54.5%
3	Primal Groudongroundfire	groundMud ShotgroundPrecipice Blades	5,902	9:47	2.13	5.2	51.8%
4	Primal Kyogrewater	waterWaterfallwaterOrigin Pulse	5,902	10:06	2.19	5.2	50.2%
5	Mega Mewtwo Ypsychic	psychicPsycho CutpsychicFuture Sight+	6,428	10:11	2.21	6.0	49.8%
6	Shadow Landorus (Therian)groundflying	groundMud ShotgroundSandsear Storm	3,922	10:17	2.23	6.0	49.3%
7	Shadow Kyogrewater	waterWaterfallwaterOrigin Pulse	4,115	10:41	2.32	5.9	47.5%
8	Mega Garchompdragonground	groundMud ShotgroundEarth Power	5,424	10:41	2.32	5.4	47.4%
9	Mega Mewtwo Xpsychicfighting	psychicPsycho CutfightingDynamic Punch+	6,112	10:56	2.38	6.0	46.4%
10	Mega Diancierockfairy	rockRock ThrowrockRock Slide	4,346	11:13	2.44	6.0	45.2%
11	Shadow Groudonground	groundMud ShotgroundPrecipice Blades	4,115	11:20	2.46	6.0	44.7%
12	Mega Rayquazadragonflying	dragonDragon TailflyingDragon Ascent	5,713	11:32	2.51	5.1	43.9%
13	Shadow Gigalithrock	normalLock-OnrockMeteor Beam	3,228	11:41	2.54	6.0	43.4%
14	Shadow Tyrantrumrockdragon	rockRock ThrowrockMeteor Beam	3,128	11:57	2.60	5.5	42.4%
15	Shadow Garchompdragonground	groundMud ShotgroundEarth Power	3,962	11:59	2.60	5.9	42.3%

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 Castform (Sunny).

Estimator is how many trainers of this strength the fight needs. Power is the share of Castform (Sunny)'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 % (2)	Overall	Power	Time to win	Faints	Estimator
Random (any moveset)showing	21%	63%	46.9%	10:49	5.9	2.35
Tackle / Solar Beam	17%	46%	44.3%	11:26	6.0	2.48
Ember / Solar Beam	17%	46%	44.7%	11:21	6.0	2.47
Tackle / Fire Blast	17%	69%	46.8%	10:49	6.0	2.35
Ember / Fire Blast	17%	71%	47.2%	10:44	6.0	2.33
Tackle / Weather Ball (Fire)	31%	99%	49.5%	10:15	5.7	2.23
Ember / Weather Ball (Fire)	33%	100%	49.7%	10:11	5.7	2.21

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 2 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…

Castform (Sunny) 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.

ground1.6x rock1.6x water1.6x normal1x fighting1x flying1x poison1x ghost1x electric1x psychic1x dragon1x dark1x bug0.63x steel0.63x fire0.63x grass0.63x ice0.63x fairy0.63x

Weak (3)
Neutral (9)
Resists (6)

It resists bug0.625xsteel0.625xfire0.625xgrass0.625xice0.625xfairy0.625x— bringing one of those is throwing damage away.

What Castform (Sunny) throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
fireEmberSTAB	10	+10	1.0s	0.60s
normalTackle	5	+5	0.5s	0.30s

Charged moves

Move	Power	Energy	Duration	Hits at
fireWeather Ball (Fire)STAB	55	-33	1.5s	1.25s
fireFire BlastSTAB	140	-100	4.0s	2.90s
grassSolar Beam	180	-100	5.0s	2.80s

Catch CP

What the encounter after the fight can hand you.

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	875	1,094
11/11/11	886	1,108
12/12/12	898	1,122
13/13/13	909	1,137
14/14/14	921	1,151
15/15/15hundo	932	1,165

Caught CP range 875 - 932, or 1,094 - 1,165 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.

Castform (Sunny) 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

Elite: 20,000 HP, 5:00 timer, boss Attack 151 / Defense 151 (15/15/15 at tier CPM 0.985).

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 % (2)	CP	DPS	TDO
1	Mega Greninja waterdarkmega Water Shuriken / Surf+	Water Shuriken / Surf++17 more movesets	100%	57.5%	1.91	8:48	18.4	100%	3,784	39.7	1148
2	Mega Starmie waterpsychicmega Psywave / Liquidation+	Psywave / Liquidation++44 more movesets	97%	54.5%	2.02	9:18	15.4	100%	3,701	37.3	1300
3	Primal Groudon groundfiremega Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	94%	51.8%	2.13	9:47	12.0	76%	5,902	35.0	1676
4	Primal Kyogre watermega Waterfall / Origin Pulse	Waterfall / Origin Pulse+5 more movesets	88%	50.2%	2.19	10:06	16.6	60%	5,902	34.4	1503
5	Mega Mewtwo Y psychicmega Psycho Cut / Future Sight+	Psycho Cut / Future Sight++26 more movesets	88%	49.8%	2.21	10:11	16.4	18%	6,428	34.1	1141
6	Shadow Landorus (Therian) groundflyingshadow Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	83%	49.3%	2.23	10:17	24.3	28%	3,922	34.4	781
7	Shadow Kyogre watershadow Waterfall / Origin Pulse	Waterfall / Origin Pulse+5 more movesets	82%	47.5%	2.32	10:41	20.2	0%	4,115	32.6	1069
8	Mega Garchomp dragongroundmega Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	85%	47.4%	2.32	10:41	13.9	0%	5,424	32.1	1412
9	Mega Mewtwo X psychicfightingmega Psycho Cut / Dynamic Punch+	Psycho Cut / Dynamic Punch++26 more movesets	81%	46.4%	2.38	10:56	18.0	0%	6,112	31.7	1039
10	Mega Diancie rockfairymega Rock Throw / Rock Slide	Rock Throw / Rock Slide+5 more movesets	76%	45.2%	2.44	11:13	24.4	0%	4,346	31.2	875
11	Shadow Groudon groundshadow Mud Shot / Precipice Blades	Mud Shot / Precipice Blades+9 more movesets	75%	44.7%	2.46	11:20	25.4	0%	4,115	31.0	771
12	Mega Rayquaza dragonflyingmega Dragon Tail / Dragon Ascent	Dragon Tail / Dragon Ascent+11 more movesets	80%	43.9%	2.51	11:32	12.5	0%	5,713	29.5	1489
13	Shadow Gigalith rockshadow Lock-On / Meteor Beam	Lock-On / Meteor Beam+14 more movesets	74%	43.4%	2.54	11:41	23.0	0%	3,228	29.9	916
14	Shadow Tyrantrum rockdragonshadow Rock Throw / Meteor Beam	Rock Throw / Meteor Beam+17 more movesets	73%	42.4%	2.60	11:57	20.6	0%	3,128	28.9	1148
15	Shadow Garchomp dragongroundshadow Mud Shot / Earth Power	Mud Shot / Earth Power+13 more movesets	72%	42.3%	2.60	11:59	21.5	0%	3,962	29.1	982
16	Mega Blastoise watermega Rollout / Hydro Cannon	Rollout / Hydro Cannon+14 more movesets	72%	41.9%	2.63	12:06	21.5	0%	3,941	28.7	1039
17	Landorus (Therian) groundflying Mud Shot / Sandsear Storm	Mud Shot / Sandsear Storm+9 more movesets	68%	41.2%	2.67	12:18	27.8	0%	3,922	28.6	700
18	Mega Tyranitar rockdarkmega Smack Down / Stone Edge	Smack Down / Stone Edge+15 more movesets	71%	41.0%	2.69	12:22	19.9	0%	5,347	27.9	1272
19	Shadow Landorus (Incarnate) groundflyingshadow Mud Shot / Earth Power	Mud Shot / Earth Power+7 more movesets	67%	40.9%	2.69	12:24	30.6	0%	3,588	28.5	626
20	Mega Aerodactyl rockflyingmega Rock Throw / Rock Slide	Rock Throw / Rock Slide+23 more movesets	68%	40.0%	2.75	12:40	21.2	0%	4,118	27.3	960
21	Mega Staraptor fightingflyingmega Sand Attack / Brave Bird+	Sand Attack / Brave Bird++19 more movesets	68%	39.8%	2.77	12:44	21.8	0%	3,979	27.2	866
22	Shadow Rampardos rockshadow Smack Down / Rock Slide	Smack Down / Rock Slide+5 more movesets	62%	39.7%	2.77	12:45	48.1	0%	3,298	29.2	562
23	Shadow Empoleon watersteelshadow Waterfall / Hydro Cannon	Waterfall / Hydro Cannon+19 more movesets	64%	39.3%	2.80	12:54	33.6	0%	2,900	27.4	583
24	Kyogre water Waterfall / Origin Pulse	Waterfall / Origin Pulse+5 more movesets	66%	39.2%	2.81	12:55	23.2	0%	4,115	26.9	994
25	Shadow Tyranitar rockdarkshadow Smack Down / Stone Edge	Smack Down / Stone Edge+15 more movesets	66%	39.2%	2.81	12:56	24.4	0%	3,834	26.9	896
26	Mega Swampert watergroundmega Water Gun / Hydro Cannon	Water Gun / Hydro Cannon+11 more movesets	62%	38.6%	2.85	13:07	38.8	0%	4,401	28.1	1064
27	Shadow Greninja waterdarkshadow Water Shuriken / Hydro Cannon	Water Shuriken / Hydro Cannon+14 more movesets	60%	37.9%	2.91	13:23	46.9	0%	2,654	27.6	556
28	Shadow Regigigas normalshadow Hidden Power / Crush Grip	Hidden Power / Crush Grip+7 more movesets	62%	37.6%	2.93	13:29	28.9	0%	4,346	26.1	676
29	Shadow Kingler watershadow Bubble / Crabhammer	Bubble / Crabhammer+14 more movesets	59%	37.4%	2.94	13:33	48.7	0%	2,829	27.5	549
30	Shadow Rhyperior groundrockshadow Mud-Slap / Rock Wrecker	Mud-Slap / Rock Wrecker+15 more movesets	58%	36.5%	3.02	13:53	43.2	0%	3,733	27.1	917

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