Who to bring
CP 1137–1203 · boosted 1421–1504
† Legacy move (Elite TM) · Mega-only move
Weak to1.6x1.6x
Seviper 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
0.625x— 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 | 1,137 | 1,421 |
| 11/11/11 | 1,150 | 1,438 |
| 12/12/12 | 1,163 | 1,454 |
| 13/13/13 | 1,176 | 1,471 |
| 14/14/14 | 1,190 | 1,487 |
| 15/15/15hundo | 1,203 | 1,504 |
Caught CP range 1,137 - 1,203, or 1,421 - 1,504 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 Seviper throws at you: its standard movepool, with the damage window a dodge has to beat.
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| Poison JabSTAB | 13 | +9 | 1.0s | 0.40s |
 Iron Tail | 14 | +6 | 1.0s | 0.75s |
| Move | Power | Energy | Duration | Hits at |
|---|---|---|---|---|
| Poison FangSTAB | 30 | -33 | 1.5s | 0.70s |
 Crunch | 65 | -33 | 3.0s | 1.10s |
 Wrap | 60 | -33 | 3.0s | 2.15s |
Simulating each boss moveset…
Beating Seviper should take 2 trainers with level 40 counters. Caught CP 1,137-1,203.
Type a name, then Enter or click a result
Seviper 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 | 100% | 96% | 61.5% | 8:14 | 6.0 | 1.79 |
| Iron Tail / Crunch | 100% | 78% | 60.3% | 8:24 | 6.0 | 1.83 |
| Poison Jab / Crunch |
Elite: 20,000 HP, 5:00 timer, boss Attack 207 / Defense 131 (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 Mewtwo Y megaPsycho Cut / Future Sight+ | Psycho Cut / Future Sight++26 more movesets | 100% | 93.3% | 1.18 | 5:26 | 8.2 | 100% | 6,428 | 63.7 | 2235 |
| 2 | Mega Mewtwo X megaConfusion / Psystrike | Confusion / Psystrike+26 more movesets | 81% | 76.2% | 1.45 | 6:39 | 8.9 | 100% | 6,112 | 51.3 | 1974 |
| 3 | Shadow Mewtwo shadowPsycho Cut / Psystrike | Psycho Cut / Psystrike+23 more movesets | 64% | 65.1% | 1.69 | 7:47 | 18.2 | 100% | 4,178 | 45.1 | 1067 |
| 4 | Primal Groudon  megaMud Shot / Precipice Blades | Mud Shot / Precipice Blades+9 more movesets | 65% | 60.5% | 1.82 | 8:22 | 8.5 | 100% | 5,902 | 40.7 | 2148 |
| 5 | Shadow Landorus (Therian)  shadowExtrasensory / Sandsear Storm | Extrasensory / Sandsear Storm+9 more movesets | 60% | 60.1% | 1.83 | 8:26 | 15.4 | 100% | 3,922 | 41.3 | 1238 |
| 6 | Mega Alakazam megaConfusion / Psychic | Confusion / Psychic+17 more movesets | 57% | 58.7% | 1.88 | 8:38 | 20.9 | 100% | 4,510 | 40.8 | 937 |
| 7 | Mewtwo Psycho Cut / Psystrike | Psycho Cut / Psystrike+23 more movesets | 55% | 56.2% | 1.96 | 9:01 | 17.8 | 100% | 4,178 | 38.6 | 1076 |
| 8 | Mega Gallade megaConfusion / Psychic | Confusion / Psychic+19 more movesets | 55% | 55.4% | 1.99 | 9:09 | 15.7 | 100% | 4,521 | 37.8 | 1162 |
| 9 | Mega Garchomp  megaMud Shot / Earth Power | Mud Shot / Earth Power+13 more movesets | 57% | 54.9% | 2.01 | 9:14 | 10.7 | 100% | 5,424 | 37.1 | 1755 |
| 10 | Mega Delphox megaZen Headbutt / Psychic | Zen Headbutt / Psychic+23 more movesets | 54% | 54.7% | 2.01 | 9:16 | 16.1 | 100% | 4,783 | 37.3 | 1199 |
| 11 | Mega Latios megaZen Headbutt / Psychic | Zen Headbutt / Psychic+9 more movesets | 54% | 54.5% | 2.02 | 9:18 | 16.2 | 100% | 5,007 | 37.3 | 1187 |
| 12 | Shadow Regigigas shadowZen Headbutt / Crush Grip | Zen Headbutt / Crush Grip+7 more movesets | 54% | 54.3% | 2.03 | 9:20 | 16.1 | 100% | 4,346 | 37.2 | 1139 |
| 13 | Mega Malamar megaPsycho Cut / Psybeam+ | Psycho Cut / Psybeam++14 more movesets | 55% | 54.3% | 2.03 | 9:20 | 13.8 | 100% | 3,143 | 37.0 | 1316 |
| 14 | Shadow Groudon shadowMud Shot / Precipice Blades | Mud Shot / Precipice Blades+9 more movesets | 55% | 54.2% | 2.03 | 9:22 | 14.5 | 100% | 4,115 | 36.8 | 1319 |
| 15 | Mega Gardevoir megaConfusion / Psychic | Confusion / Psychic+19 more movesets | 52% | 53.8% | 2.05 | 9:25 | 20.3 | 100% | 4,512 | 37.2 | 912 |
| 16 | Landorus (Therian) Mud Shot / Sandsear Storm | Mud Shot / Sandsear Storm+9 more movesets | 52% | 52.3% | 2.11 | 9:42 | 15.5 | 90% | 3,922 | 35.7 | 1240 |
| 17 | Hoopa (Unbound) Confusion / Psychic | Confusion / Psychic+5 more movesets | 51% | 52.1% | 2.11 | 9:43 | 18.8 | 98% | 4,006 | 35.7 | 984 |
| 18 | Shadow Excadrill shadowMud-Slap / Scorching Sands | Mud-Slap / Scorching Sands+14 more movesets | 52% | 51.5% | 2.14 | 9:51 | 15.0 | 70% | 3,244 | 35.0 | 1536 |
| 19 | Shadow Latios shadowZen Headbutt / Psychic | Zen Headbutt / Psychic+9 more movesets | 50% | 51.4% | 2.14 | 9:52 | 21.9 | 70% | 3,812 | 35.6 | 887 |
| 20 | Shadow Metagross shadowZen Headbutt / Psychic | Zen Headbutt / Psychic+15 more movesets | 51% | 50.8% | 2.17 | 9:58 | 14.5 | 64% | 3,791 | 34.6 | 1559 |
| 21 | Mega Metagross megaZen Headbutt / Psychic | Zen Headbutt / Psychic+15 more movesets | 53% | 50.4% | 2.18 | 10:03 | 10.5 | 48% | 4,911 | 33.9 | 2083 |
| 22 | Shadow Garchomp shadowMud Shot / Earth Power | Mud Shot / Earth Power+13 more movesets | 50% | 50.1% | 2.20 | 10:06 | 15.8 | 22% | 3,962 | 34.2 | 1214 |
| 23 | Shadow Alakazam shadowConfusion / Psychic | Confusion / Psychic+17 more movesets | 46% | 50.1% | 2.20 | 10:07 | 32.6 | 52% | 3,057 | 35.5 | 594 |
| 24 | Mega Rayquaza megaDragon Tail / Dragon Ascent | Dragon Tail / Dragon Ascent+11 more movesets | 50% | 50.0% | 2.20 | 10:08 | 14.8 | 14% | 5,713 | 33.9 | 1231 |
| 25 | Shadow Mamoswine  shadowMud-Slap / High Horsepower | Mud-Slap / High Horsepower+11 more movesets | 48% | 49.6% | 2.22 | 10:13 | 20.8 | 12% | 3,328 | 34.2 | 931 |
| 26 | Shadow Landorus (Incarnate) shadowMud Shot / Earth Power | Mud Shot / Earth Power+7 more movesets | 48% | 49.2% | 2.24 | 10:18 | 19.1 | 0% | 3,588 | 33.8 | 1009 |
| 27 | Shadow Rhyperior  shadowMud-Slap / Earthquake | Mud-Slap / Earthquake+15 more movesets | 49% | 48.5% | 2.27 | 10:27 | 13.7 | 0% | 3,733 | 32.9 | 1531 |
| 28 | Mega Latias megaZen Headbutt / Psychic | Zen Headbutt / Psychic+14 more movesets | 48% | 47.9% | 2.30 | 10:34 | 15.2 | 0% | 4,801 | 32.6 | 1254 |
| 29 | Necrozma (Dusk Mane) Psycho Cut / Sunsteel Strike | Psycho Cut / Sunsteel Strike+14 more movesets | 48% | 47.8% | 2.30 | 10:36 | 13.9 | 0% | 4,099 | 32.4 | 1732 |
| 30 | Shadow Gallade shadowPsycho Cut / Psychic | Psycho Cut / Psychic+19 more movesets | 45% | 47.7% | 2.31 | 10:37 | 24.9 | 0% | 3,093 | 33.1 | 750 |
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 1.0 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+.
| 100% |
| 79% |
| 60.6% |
| 8:22 |
| 6.0 |
| 1.82 |
| Iron Tail / Wrap | 100% | 98% | 61.5% | 8:14 | 6.0 | 1.79 |
| Poison Jab / Wrap | 100% | 99% | 61.5% | 8:14 | 6.0 | 1.79 |
| Iron Tail / Poison Fang | 100% | 121% | 62.6% | 8:06 | 6.0 | 1.76 |
| Poison Jab / Poison Fang | 100% | 123% | 62.7% | 8:05 | 5.8 | 1.76 |
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.
