Who to bring
CP 875–932 · boosted 1094–1165
† Legacy move (Elite TM) · Mega-only move
Weak to1.6x1.6x
Castform (Rainy) against every one of the 18 attacking types. GO multipliers: 1.6x super effective, 2.56x doubly, 0.625x resisted, 0.39x doubly resisted.
It resists 0.625x0.625x0.625x0.625x— bringing one of those is throwing damage away.
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.
What Castform (Rainy) throws at you: its standard movepool, with the damage window a dodge has to beat.
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| Water GunSTAB | 5 | +5 | 0.5s | 0.30s |
 Tackle | 5 | +5 | 0.5s | 0.30s |
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| Hydro PumpSTAB | 135 | -100 | 3.5s | 1.10s |
| Weather Ball (Water)STAB | 55 | -33 | 1.5s | 1.25s |
| Thunder | 100 | -100 | 2.5s | 1.30s |
Simulating each boss moveset…
Beating Castform (Rainy) should take 2 trainers with level 40 counters. Caught CP 875-932.
Type a name, then Enter or click a result
Castform (Rainy) 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.
The chevron on the top 15 opens damage per move, breakpoints and the energy cycle. Every column (CP, faints, power, pokebattler.com's own rank) is under All settings.
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 | 28% | 62% | 48.2% | 10:31 | 6.0 | 2.28 |
| Tackle / Hydro Pump | 19% | 49% | 46.1% | 11:00 | 6.0 | 2.39 |
| Water Gun / Hydro Pump |
Elite: 20,000 HP, 5:00 timer, boss Attack 151 / Defense 151 (15/15/15 at tier CPM 0.985).
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 Raichu Y megaThunder Shock / Zap Cannon+ | Thunder Shock / Zap Cannon++35 more movesets | 100% | 60.7% | 1.81 | 8:21 | 18.0 | 100% | 3,780 | 42.1 | 1097 |
| 2 | Mega Raichu X megaThunder Shock / Volt Tackle+ | Thunder Shock / Volt Tackle++35 more movesets | 87% | 52.8% | 2.09 | 9:36 | 18.7 | 72% | 3,510 | 36.5 | 1087 |
| 3 | Mega Chesnaught  megaVine Whip / Seed Bomb+ | Vine Whip / Seed Bomb++20 more movesets | 91% | 51.5% | 2.14 | 9:50 | 8.9 | 90% | 4,093 | 34.6 | 2016 |
| 4 | Shadow Thundurus (Therian)  shadowVolt Switch / Wildbolt Storm | Volt Switch / Wildbolt Storm+9 more movesets | 81% | 51.0% | 2.16 | 9:56 | 24.4 | 58% | 3,659 | 35.5 | 775 |
| 5 | Mega Sceptile  megaFury Cutter / Frenzy Plant | Fury Cutter / Frenzy Plant+11 more movesets | 88% | 50.8% | 2.17 | 9:59 | 10.8 | 56% | 4,056 | 34.2 | 1674 |
| 6 | Mega Mewtwo Y  megaPsycho Cut / Future Sight+ | Psycho Cut / Future Sight++26 more movesets | 84% | 50.1% | 2.20 | 10:07 | 14.7 | 38% | 6,428 | 34.2 | 1288 |
| 7 | Regieleki Lock-On / Thunder Cage | Lock-On / Thunder Cage+11 more movesets | 75% | 46.6% | 2.36 | 10:52 | 22.8 | 0% | 2,803 | 32.3 | 854 |
| 8 | Mega Mewtwo X megaPsycho Cut / Dynamic Punch+ | Psycho Cut / Dynamic Punch++26 more movesets | 77% | 46.4% | 2.37 | 10:56 | 16.6 | 0% | 6,112 | 31.5 | 1132 |
| 9 | Shadow Electivire shadowThunder Shock / Wild Charge | Thunder Shock / Wild Charge+9 more movesets | 71% | 45.0% | 2.45 | 11:16 | 27.3 | 0% | 3,079 | 31.3 | 721 |
| 10 | Kartana Razor Leaf / Leaf Blade | Razor Leaf / Leaf Blade+14 more movesets | 72% | 44.6% | 2.47 | 11:22 | 21.1 | 0% | 3,677 | 30.5 | 891 |
| 11 | Shadow Raikou shadowThunder Shock / Wild Charge | Thunder Shock / Wild Charge+9 more movesets | 71% | 44.4% | 2.48 | 11:25 | 24.6 | 0% | 3,452 | 30.6 | 848 |
| 12 | Zeraora Volt Switch / Plasma Fists | Volt Switch / Plasma Fists+9 more movesets | 72% | 44.4% | 2.48 | 11:26 | 20.7 | 0% | 3,419 | 30.4 | 960 |
| 13 | Zekrom Charge Beam / Fusion Bolt | Charge Beam / Fusion Bolt+9 more movesets | 75% | 44.0% | 2.50 | 11:32 | 12.1 | 0% | 4,038 | 29.6 | 1598 |
| 14 | Mega Rayquaza megaDragon Tail / Dragon Ascent | Dragon Tail / Dragon Ascent+11 more movesets | 74% | 43.7% | 2.52 | 11:36 | 14.2 | 0% | 5,713 | 29.5 | 1306 |
| 15 | Mega Manectric megaThunder Fang / Wild Charge | Thunder Fang / Wild Charge+14 more movesets | 69% | 43.3% | 2.54 | 11:42 | 25.9 | 0% | 3,580 | 30.0 | 798 |
| 16 | Thundurus (Therian) Volt Switch / Wildbolt Storm | Volt Switch / Wildbolt Storm+9 more movesets | 68% | 43.0% | 2.56 | 11:47 | 26.8 | 0% | 3,659 | 29.9 | 722 |
| 17 | Xurkitree Thunder Shock / Discharge | Thunder Shock / Discharge+7 more movesets | 67% | 42.8% | 2.57 | 11:51 | 28.6 | 0% | 3,937 | 29.7 | 706 |
| 18 | Shaymin (Sky) Magical Leaf / Grass Knot | Magical Leaf / Grass Knot+11 more movesets | 69% | 41.8% | 2.63 | 12:07 | 17.9 | 0% | 3,592 | 28.4 | 1054 |
| 19 | Shadow Chesnaught shadowVine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+17 more movesets | 69% | 41.7% | 2.64 | 12:08 | 17.8 | 0% | 2,954 | 28.4 | 1055 |
| 20 | Shadow Sceptile shadowFury Cutter / Frenzy Plant | Fury Cutter / Frenzy Plant+11 more movesets | 67% | 41.7% | 2.64 | 12:09 | 23.5 | 0% | 2,757 | 28.7 | 803 |
| 21 | Shadow Zapdos shadowThunder Shock / Thunderbolt | Thunder Shock / Thunderbolt+11 more movesets | 65% | 41.6% | 2.65 | 12:11 | 29.7 | 0% | 3,527 | 28.9 | 658 |
| 22 | Shadow Magnezone shadowSpark / Wild Charge | Spark / Wild Charge+15 more movesets | 65% | 41.5% | 2.65 | 12:12 | 27.6 | 0% | 3,205 | 28.7 | 735 |
| 23 | Mega Venusaur  megaVine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+9 more movesets | 70% | 41.5% | 2.65 | 12:13 | 13.9 | 0% | 3,698 | 28.1 | 1337 |
| 24 | Mega Ampharos megaVolt Switch / Zap Cannon | Volt Switch / Zap Cannon+15 more movesets | 69% | 40.8% | 2.70 | 12:25 | 13.3 | 0% | 4,245 | 27.6 | 1442 |
| 25 | Shadow Venusaur shadowVine Whip / Frenzy Plant | Vine Whip / Frenzy Plant+9 more movesets | 66% | 40.7% | 2.70 | 12:27 | 21.0 | 0% | 2,720 | 27.8 | 901 |
| 26 | Mega Victreebel megaMagical Leaf / Leaf Blade | Magical Leaf / Leaf Blade+23 more movesets | 66% | 40.2% | 2.74 | 12:36 | 18.3 | 0% | 3,505 | 27.3 | 1022 |
| 27 | Shadow Luxray shadowSpark / Wild Charge | Spark / Wild Charge+14 more movesets | 62% | 39.8% | 2.77 | 12:44 | 30.5 | 0% | 2,888 | 27.7 | 645 |
| 28 | Shadow Tangrowth shadowVine Whip / Power Whip | Vine Whip / Power Whip+9 more movesets | 65% | 39.8% | 2.77 | 12:44 | 19.0 | 0% | 3,030 | 27.0 | 993 |
| 29 | Zarude  Vine Whip / Power Whip | Vine Whip / Power Whip+5 more movesets | 67% | 39.5% | 2.79 | 12:51 | 13.8 | 0% | 3,833 | 26.6 | 1334 |
| 30 | Shadow Vikavolt  shadowSpark / Discharge | Spark / Discharge+15 more movesets | 61% | 39.2% | 2.81 | 12:55 | 32.4 | 0% | 3,117 | 27.4 | 614 |
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%.
Ranked 30 attackers in 1.3 s (50 Monte Carlo runs each, seed 1). Same boss on pokebattler.com. The same ranking as JSON: /api/raids/rank.
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+.
| 19% |
| 49% |
| 46.1% |
| 10:60 |
| 6.0 |
| 2.39 |
| Water Gun / Weather Ball (Water) | 33% | 63% | 48.7% | 10:24 | 6.0 | 2.26 |
| Tackle / Weather Ball (Water) | 33% | 65% | 49.2% | 10:19 | 6.0 | 2.24 |
| Water Gun / Thunder | 31% | 79% | 49.2% | 10:18 | 6.0 | 2.24 |
| Tackle / Thunder | 33% | 83% | 49.8% | 10:11 | 6.0 | 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.
