Not in raids nowNo announced raid window, Max Battle event or Power Spot board includes this species. Simulate it anyway · What is in raids

Cloyster

#0091

water ice shadow

Attack: 186
Defense: 256
Stamina: 137

Best fast:: Frost Breath 13.20 DPS with STAB
Best charged:: Liquidation 2.55 DPE with STAB
Max CP:: 2,914

In-game artwork for this exact form (PokeMiners asset dump).

Slug:: cloyster
Game Master form:: CLOYSTER (no form template)
Family:: FAMILY_SHELLDER

Base stats and CP

Straight from the Game Master; CP uses the level 1 to 51 CPM table. Ranks are recomputed over the released forms in the snapshot on every render.

Attack#459 of 1,123 · top 40.9%

186

Defense#28 of 1,123 · top 2.5%

256

Stamina#839 of 1,123 · top 74.7%

137

Stat product 6,523,392 — #354 of 1,123 released forms. Bars are scaled against the highest value in the snapshot, not a round number.

Max CP (L40)

2,547

15/15/15, old level cap

Max CP (L50)

2,880

15/15/15, current level cap

Max CP (L51)

2,914

15/15/15 best buddy — Pokebattler's headline

Catch CP (L20)

1,383 - 1,455

IV 10 to 15

Catch CP (L25)

1,729 - 1,819

weather boosted, IV 10 to 15

Evolution family

1 evolution in this line, with the candy and everything else the game asks for — read out of the Game Master's evolutionBranch, form by form.

Base
Shellder116/134/102 · 1,080 CP
Stage 2
Cloyster186/256/137 · 2,547 CP
50 candy
- 45 candy once purified

Evolutions are form-accurate: a regional form evolves into its own regional form, and a branch the game does not have is not drawn (Alolan Raichu names Pikachu as its parent but is not what Pikachu evolves into, so no line is shown). Mega Evolution is not part of this family — it costs Mega Energy and reverts, so it sits with the forms above.

In the field

Buddy, Pokedex and unlock numbers, all read from this form's own Game Master template.

Buddy distance

3 km

walked per candy

Height

1.5 m

Weight

132.5 kg

Second charged move

50 candy

50,000 stardust

Shadow move

Frustration

Return once purified

Best against

Which raid bosses Cloyster is a top counter for, aggregated over the 120 bosses on the roster the same way pokebattler.com aggregates its own attacker rankings.

Top ten finishes

of 120 bosses ranked

Matchups

bosses it places on at all

Points

Pokebattler's published weighting

Its best showing is14againstLandorus (Therian)(Tier 5) with Frost Breath + Avalanche.

#14Landorus (Therian)groundflyingTier 5
Estimator
2.12
Time to win
9:44
Points
20
Frost Breath + Avalanche
#22Zygarde (Ten Percent)dragongroundTier 5
Estimator
1.97
Time to win
9:03
Points
10
Frost Breath + Avalanche
#22Zygarde (Complete)dragongroundTier 5
Estimator
2.31
Time to win
10:39
Points
10
Frost Breath + Avalanche
#23RayquazadragonflyingTier 5
Estimator
2.03
Time to win
9:20
Points
10
Frost Breath + Avalanche
#23Landorus (Incarnate)groundflyingTier 5
Estimator
2.29
Time to win
10:33
Points
10
Frost Breath + Avalanche
#25Zygarde (Fifty Percent)dragongroundTier 5
Estimator
2.63
Time to win
12:05
Points
10
Frost Breath + Avalanche

Place	Boss	Tier	Moveset used	Estimator	Time to win	Points
#14	Landorus (Therian)groundflying	Tier 5	Frost Breath + Avalanche	2.12	9:44	20
#22	Zygarde (Ten Percent)dragonground	Tier 5	Frost Breath + Avalanche	1.97	9:03	10
#22	Zygarde (Complete)dragonground	Tier 5	Frost Breath + Avalanche	2.31	10:39	10
#23	Rayquazadragonflying	Tier 5	Frost Breath + Avalanche	2.03	9:20	10
#23	Landorus (Incarnate)groundflying	Tier 5	Frost Breath + Avalanche	2.29	10:33	10
#25	Zygarde (Fifty Percent)dragonground	Tier 5	Frost Breath + Avalanche	2.63	12:05	10

"Details" opens Cloyster's per-move damage against that boss, its breakpoints and its energy cycle — the same drawer the boss page opens.

Ranked with Shadow, Mega and Legendary attackers hidden — pokebattler.com's own default, so a place here is comparable with a place on its counter page. With everything switched on it places on 0 bosses. Points follow pokebattler.com's published rule — 5 for a first place, 4 for a second, 3 for a fourth, 2 for an eighth, 1 for a sixteenth, weighted 10x at Tier 5 / Mega, 4x at Tier 3 and 0x at Tier 1. Level 40, 15/15/15, no weather, no friendship, no dodging. Snapshot generated 2026-10-05.

As a raid boss (Tier 3)

Boss stats use 15/15/15 IVs, the tier CP multiplier and the tier's fixed HP pool.

Lobby CP

19,853

Attack

146

Defense

197

3,600

Not in the current raid rotation snapshot. The counters below are still exact for the tier this form would be hosted at.

Best counters against Cloyster →

Catch CP after the raid

IV spread	CP at L20	CP at L25 (weather boosted)
10/10/10floor	1,383	1,729
11/11/11	1,397	1,747
12/12/12	1,412	1,765
13/13/13	1,426	1,783
14/14/14	1,441	1,801
15/15/15hundo	1,455	1,819

Caught CP range 1,383 - 1,455, or 1,729 - 1,819 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.

Type matchups

Every one of the 18 attacking types against this typing. GO multipliers: 1.6x super effective, 0.625x resisted, 0.390625x doubly resisted.

fighting1.6x rock1.6x grass1.6x electric1.6x normal1x flying1x poison1x ground1x bug1x ghost1x steel1x fire1x psychic1x dragon1x dark1x fairy1x water0.63x ice0.39x

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

Weak to

1.6xfighting rock grass electric

Resists

0.39xice

0.63xwater

Every tile and chip is a link: it opens the Pokedex filtered to that type, so a weakness leads straight to the attackers that exploit it. Pokebattler lists only the weaknesses; the eleven types that do neither matter as much to a raider deciding what to bring, so all 18 are shown with the exact multiplier.

Same typing, same matchups

Released water / ice forms with the highest attack — they share every weakness and resistance above.

Movepool

2 fast and 7 charged moves, elite / legacy included. Ranked by damage per second (fast) and damage per energy (charged), both with this form's x1.2 STAB applied where it earns it.

Best moveset21.6 DPS

iceIce Shard

iceAvalanche

5 x Ice Shard per Avalanche · 7.5s cycle · 162 power with STAB

#221.6 DPS

iceFrost Breath

waterRazor Shell

4 x Frost Breath per Razor Shell · 5.5s cycle · 119 power with STAB

#321.3 DPS

iceFrost Breath

iceAvalanche

6 x Frost Breath per Avalanche · 8.5s cycle · 181 power with STAB

Fast moves

Move	Type	Power	Energy	Duration	DPS	EPS	Att DPS	Def DPS	PvP	Source
Frost BreathSTAB	ice	11	+9	1.0s	13.20	9.00	3.7	11.0	7 / 5 / 2t	standard
Ice ShardSTAB	ice	10	+10	1.0s	12.00	10.00	3.3	10.0	9 / 10 / 3t	standard

Charged moves

Move	Type	Power	Energy	Duration	DPS	DPE	Att DPS	Def DPS	PvP	Source
LiquidationSTAB	water	70	-33	3.0s	28.00	2.55	14.0	23.3	70 / 45	standard
Icy WindSTAB	ice	65	-33	3.5s	22.29	2.36	11.8	18.6	60 / 45	standard
AvalancheSTAB	ice	85	-50	2.5s	40.80	2.04	18.9	34.0	90 / 45	standard
Razor ShellSTAB	water	55	-33	1.5s	44.00	2.00	15.7	36.7	35 / 35	standard
Aurora BeamSTAB	ice	80	-50	3.5s	27.43	1.92	14.5	22.9	80 / 60	standard
Hydro PumpSTAB	water	135	-100	3.5s	46.29	1.62	24.5	38.6	130 / 75	standard
BlizzardSTAB	ice	130	-100	3.0s	52.00	1.56	26.0	43.3	140 / 75	elite / legacy

STAB marks moves that share a type with this form (x1.2 damage), and the DPS and DPE columns above already have that x1.2 in them — so a STAB move and a stronger-on-paper neutral move can be compared straight down the column, which is how the best-moveset cards rank them too. Power and Duration stay raw; hover a DPS or DPE figure to see the arithmetic. Att DPS and Def DPS are the two columns pokebattler.com prints in the same table, reproduced exactly: both are raw with no STAB, Def DPS is power / duration, and Att DPS is power / (duration + 2s), the gym move delay. They are there so this table can be diffed against theirs row by row — every row on the pages read on 2026-09-11 matches. Energy is gained on fast moves and spent on charged moves. Every move name opens its own page with the damage window and every other form that learns it — or browse all moves.

Trainer Battles

The same moves, on the Trainer Battle clock: 0.5s per turn, 100 energy cap, stat changes included. These numbers come from a separate Game Master template and are not the raid numbers above.

Best pairing10.8DPT

Ice Shard+Avalanche

5 fast throws · 15 turns · 7.5s to fire

#210.6DPT

Ice Shard+Blizzard

8 fast throws · 24 turns · 12.0s to fire

#310.2DPT

Frost Breath+Avalanche

9 fast throws · 18 turns · 9.0s to fire

Fast moves

Move	Type	Power	Energy	Turns	DPT	EPT	Raid
Frost BreathSTAB	ice	7	+5	2(1.0s)	4.20	2.50	11 / +9
Ice ShardSTAB	ice	9	+10	3(1.5s)	3.60	3.33	10 / +10

Charged moves

Move	Type	Power	Energy	DPE	Effect	Raid
AvalancheSTAB	ice	90	-45	2.40	none	85 / -50
BlizzardSTAB	ice	140	-75	2.24	none	130 / -100
Hydro PumpSTAB	water	130	-75	2.08	none	135 / -100
LiquidationSTAB	water	70	-45	1.87	foe Def -1 @30%	70 / -33
Icy WindSTAB	ice	60	-45	1.60	foe Atk -1	65 / -33
Aurora BeamSTAB	ice	80	-60	1.60	none	80 / -50
Razor ShellSTAB	water	35	-35	1.20	foe Def -1 @50%	55 / -33

Turns are the one-based count the game and every reference site print: the Game Master ships a zero-based durationTurns, so its 1 is a 2-turn move. DPT and EPT are damage and energy per turn and DPE is damage per energy, both with this form's x1.2 STAB already in them where the row is flagged STAB, so the columns can be read straight down; Power and Energy stay raw. A stat change moves the target up or down the game's own ladder (0.50, 0.57, 0.67, 0.80, 1.00, 1.25, 1.50, 1.75, 2.00 for stages -4 to +4). Every Trainer Battle number is audited on the data-quality page.

Acquisition and variants

Shadow and Purified

Available as a Shadow Pokemon (x1.2 attack, x0.833 defense). Shadow charged move FRUSTRATION, purified RETURN.

Second charged move

50,000 Stardust and 50 Candy.

Max Battles

Cannot Dynamax.

Mega Evolution

This entry is not a Mega or Primal form.

Forms of Cloyster (1)

Every form the snapshot carries for this dex number. Each one appears exactly once.

Form	Types	Atk	Def	Sta	Moves	Status
Cloyster	water ice	186	256	137	2f / 7c	released

Where this data comes from

Every field above is read from the committed snapshot, never typed by hand.

Built 2026-10-03 from the PokeMiners Game Master (https://raw.githubusercontent.com/PokeMiners/game_masters/master/latest/latest.json), refreshed automatically every day.

No hand-curated correction was needed for this form; it comes straight from the Game Master template.

Checked against Pokebattler1 movepool difference

Their entry: CLOYSTER — 2 fast, 8 charged. Ours: 2 fast, 7 charged.

Return (charged) — only on Pokebattler: Return (purified only)

Source: https://fight.pokebattler.com/pokemon, read 2026-10-03. The full diff across all 1,269 forms is on the movepool cross-check.

Snapshot integrity is re-checked on every build and on the data quality page.