Shadow raid

Shadow Horsea counters

#0116

waterShadow 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

3,831

600

Timer

3:00

Attack

Defense

Difficulty

0.09

Pokebattler scale

Beating Shadow Horsea should take 1 trainer with level 40 counters. Caught CP 522-603.

Weak tograss1.6xelectric1.6x

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 an Electric Mega — most top counters attack with Electric

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 Horsea counters are Mega Raichu Y, Kartana, Shadow Thundurus (Therian), Shadow Sceptile, Regieleki & Shadow Electivire.

Suggested party of sixat most one Mega

M. Raichu Y
Kartana
S. Thundurus (Therian)
S. Sceptile
Regieleki
S. Electivire

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 Raichu YMegapartyVolt Switch / Zap Cannon+0.060:10
2KartanaLegendarypartyRazor Leaf / Leaf Blade0.090:16
3Mega Raichu XMegaSpark / Volt Tackle+0.090:16
4Shadow Thundurus (Therian)ShadowLegendarypartyVolt Switch / Wildbolt Storm0.090:16
5Mega SceptileMegaFury Cutter / Frenzy Plant0.090:16
6Mega ChesnaughtMegaVine Whip / Seed Bomb+0.090:16
7Shadow SceptileShadowpartyFury Cutter / Frenzy Plant0.090:17
8RegielekiLegendarypartyLock-On / Thunder Cage0.090:17
9Mega Mewtwo XMegaLegendaryPsycho Cut / Dynamic Punch+0.090:17
10Mega Mewtwo YMegaLegendaryConfusion / Thunderbolt0.090:17
11Shadow ElectivireShadowpartyThunder Shock / Wild Charge0.100:17

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 — 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

Raid alerts…

Top 15 Shadow Horsea 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 Raichu Yelectricjoint top pick	electricVolt SwitchelectricZap Cannon+	3,780	0:10	0.06	4232.0%
2	Kartanagrasssteel	grassRazor LeafgrassLeaf Blade	3,677	0:16	0.09	2724.7%
3	Mega Raichu Xelectric	electricSparkelectricVolt Tackle+	3,510	0:16	0.09	2724.7%
4	Shadow Thundurus (Therian)electricflying	electricVolt SwitchelectricWildbolt Storm	3,659	0:16	0.09	2717.9%
5	Mega Sceptilegrassdragon	bugFury CuttergrassFrenzy Plant	4,056	0:16	0.09	2663.1%
6	Mega Chesnaughtgrassfighting	grassVine WhipgrassSeed Bomb+	4,093	0:16	0.09	2642.1%
7	Shadow Sceptilegrass	bugFury CuttergrassFrenzy Plant	2,757	0:17	0.09	2631.0%
8	Regielekielectric	normalLock-OnelectricThunder Cage	2,803	0:17	0.09	2593.4%
9	Mega Mewtwo Xpsychicfighting	psychicPsycho CutfightingDynamic Punch+	6,112	0:17	0.09	2582.3%
10	Mega Mewtwo Ypsychic	psychicConfusionelectricThunderbolt	6,428	0:17	0.09	2564.4%
11	Shadow Electivireelectric	electricThunder ShockelectricWild Charge	3,079	0:17	0.10	2558.4%
12	Xurkitreeelectric	electricThunder ShockgrassPower Whip	3,937	0:17	0.10	2552.4%
13	Shadow Zapdoselectricflying	electricThunder ShockelectricThunderbolt	3,527	0:17	0.10	2549.4%
14	Shadow Raikouelectric	electricThunder ShockelectricThunderbolt	3,452	0:17	0.10	2543.5%
15	Shadow Manectricelectric	electricThunder FangelectricWild Charge	2,340	0:18	0.10	2485.5%

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 Horsea.

Estimator is how many trainers of this strength the fight needs. Power is the share of Shadow Horsea'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%	576%	2821.2%	0:15	0.09
Water Gun / Flash Cannon	100%	660%	2814.8%	0:15	0.09
Water Gun / Dragon Pulse	100%	578%	2816.1%	0:15	0.09
Bubble / Flash Cannon	100%	606%	2821.2%	0:15	0.09
Water Gun / Bubble Beam	100%	614%	2826.2%	0:15	0.09
Bubble / Dragon Pulse	100%	537%	2827.5%	0:15	0.09
Bubble / Bubble Beam	100%	586%	2833.9%	0:15	0.09

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…

Horsea 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.

grass1.6x electric1.6x normal1x fighting1x flying1x poison1x ground1x rock1x bug1x ghost1x psychic1x dragon1x dark1x fairy1x steel0.63x fire0.63x water0.63x ice0.63x

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

It resists steel0.625xfire0.625xwater0.625xice0.625x— bringing one of those is throwing damage away.

What Horsea throws at you

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

Fast moves

Move	Power	Energy	Duration	Hits at
waterWater GunSTAB	5	+5	0.5s	0.30s
waterBubbleSTAB	10	+12	1.0s	0.55s

Charged moves

Move	Power	Energy	Duration	Hits at
steelFlash Cannon	100	-100	2.5s	1.40s
waterBubble BeamSTAB	45	-33	2.0s	1.55s
dragonDragon Pulse	90	-50	3.5s	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	522	653
7/7/7	531	664
8/8/8	540	675
9/9/9	549	686
10/10/10	558	697
11/11/11	567	708
12/12/12	576	720
13/13/13	585	731
14/14/14	594	743
15/15/15hundo	603	754

Caught CP range 522 - 603, or 653 - 754 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 522, not at the 558 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 36 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.

Horsea 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 86 / Defense 70 (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 Raichu Y electricmega Volt Switch / Zap Cannon+	Volt Switch / Zap Cannon++35 more movesets	100%	4232.0%	0.06	0:10	100%	3,780	58.6	604
2	Kartana grasssteel Razor Leaf / Leaf Blade	Razor Leaf / Leaf Blade+14 more movesets	60%	2724.7%	0.09	0:16	100%	3,677	37.5	600
3	Mega Raichu X electricmega Spark / Volt Tackle+	Spark / Volt Tackle++35 more movesets	60%	2724.7%	0.09	0:16	100%	3,510	37.6	602
4	Shadow Thundurus (Therian) electricflyingshadow Volt Switch / Wildbolt Storm	Volt Switch / Wildbolt Storm+9 more movesets	58%	2717.9%	0.09	0:16	100%	3,659	39.0	627
5	Mega Sceptile grassdragonmega Fury Cutter / Frenzy Plant	Fury Cutter / Frenzy Plant+11 more movesets	61%	2663.1%	0.09	0:16	100%	4,056	43.4	710
6	Mega Chesnaught grassfightingmega Vine Whip / Seed Bomb+	Vine Whip / Seed Bomb++20 more movesets	64%	2642.1%	0.09	0:16	100%	4,093	36.5	603
7	Shadow Sceptile grassshadow Fury Cutter / Frenzy Plant	Fury Cutter / Frenzy Plant+11 more movesets	56%	2631.0%	0.09	0:17	100%	2,757	36.3	601
8	Regieleki electric Lock-On / Thunder Cage	Lock-On / Thunder Cage+11 more movesets	58%	2593.4%	0.09	0:17	100%	2,803	45.1	757
9	Mega Mewtwo X psychicfightingmega Psycho Cut / Dynamic Punch+	Psycho Cut / Dynamic Punch++26 more movesets	61%	2582.3%	0.09	0:17	100%	6,112	43.5	733
10	Mega Mewtwo Y psychicmega Confusion / Thunderbolt	Confusion / Thunderbolt+26 more movesets	59%	2564.4%	0.09	0:17	100%	6,428	36.0	612
11	Shadow Electivire electricshadow Thunder Shock / Wild Charge	Thunder Shock / Wild Charge+9 more movesets	54%	2558.4%	0.10	0:17	100%	3,079	40.0	681
12	Xurkitree electric Thunder Shock / Power Whip	Thunder Shock / Power Whip+7 more movesets	55%	2552.4%	0.10	0:17	100%	3,937	38.2	652
13	Shadow Zapdos electricflyingshadow Thunder Shock / Thunderbolt	Thunder Shock / Thunderbolt+11 more movesets	55%	2549.4%	0.10	0:17	100%	3,527	36.9	631
14	Shadow Raikou electricshadow Thunder Shock / Thunderbolt	Thunder Shock / Thunderbolt+9 more movesets	55%	2543.5%	0.10	0:17	100%	3,452	35.6	610
15	Shadow Manectric electricshadow Thunder Fang / Wild Charge	Thunder Fang / Wild Charge+14 more movesets	49%	2485.5%	0.10	0:18	100%	2,340	35.9	630
16	Zekrom dragonelectric Charge Beam / Wild Charge	Charge Beam / Wild Charge+9 more movesets	56%	2482.6%	0.10	0:18	100%	4,038	35.0	614
17	Shadow Magnezone electricsteelshadow Charge Beam / Wild Charge	Charge Beam / Wild Charge+15 more movesets	54%	2477.0%	0.10	0:18	100%	3,205	36.9	648
18	Mega Manectric electricmega Charge Beam / Wild Charge	Charge Beam / Wild Charge+14 more movesets	53%	2474.2%	0.10	0:18	100%	3,580	35.9	633
19	Shadow Luxray electricshadow Snarl / Wild Charge	Snarl / Wild Charge+14 more movesets	51%	2446.4%	0.10	0:18	100%	2,888	34.2	609
20	Shadow Alolan Golem rockelectricshadow Volt Switch / Wild Charge	Volt Switch / Wild Charge+8 more movesets	49%	2421.9%	0.10	0:18	100%	2,949	33.7	607
21	Shadow Thundurus (Incarnate) electricflyingshadow Thunder Shock / Thunder	Thunder Shock / Thunder+7 more movesets	50%	2412.6%	0.10	0:18	100%	3,345	36.1	651
22	Mega Rayquaza dragonflyingmega Dragon Tail / Dragon Ascent	Dragon Tail / Dragon Ascent+11 more movesets	54%	2398.0%	0.10	0:18	100%	5,713	36.8	668
23	Thundurus (Therian) electricflying Volt Switch / Thunderbolt	Volt Switch / Thunderbolt+9 more movesets	51%	2394.0%	0.10	0:18	100%	3,659	35.0	638
24	Shadow Zebstrika electricshadow Spark / Wild Charge	Spark / Wild Charge+5 more movesets	48%	2394.0%	0.10	0:18	100%	2,428	33.1	603
25	Mega Victreebel grasspoisonmega Razor Leaf / Solar Beam	Razor Leaf / Solar Beam+23 more movesets	52%	2371.9%	0.10	0:18	100%	3,505	33.8	622
26	Mega Beedrill bugpoisonmega Bug Bite / Fell Stinger+	Bug Bite / Fell Stinger++23 more movesets	48%	2344.8%	0.10	0:19	100%	3,383	35.6	662
27	Shadow Cacturne grassdarkshadow Sucker Punch / Grass Knot	Sucker Punch / Grass Knot+14 more movesets	45%	2336.3%	0.10	0:19	100%	2,298	32.4	605
28	Zeraora electric Spark / Wild Charge	Spark / Wild Charge+9 more movesets	49%	2290.8%	0.11	0:19	100%	3,419	31.8	605
29	Shadow Vikavolt bugelectricshadow Spark / Discharge	Spark / Discharge+15 more movesets	47%	2289.6%	0.11	0:19	100%	3,117	34.9	665
30	Mega Houndoom darkfiremega Snarl / Dark Pulse+	Snarl / Dark Pulse++17 more movesets	48%	2270.3%	0.11	0:19	100%	3,842	34.9	669

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.