Shell Smash Cloyster with Skill Link fires five-hit Icicle Spear and Rock Blast for massive damage. S-Tier in BW2 and one of the best setup sweepers.
Ability 1Shell ArmorAbility 1Protects against critical hits.Ability 2Skill LinkAbility 2Extends two-to-five-hit moves and triple kick to their full length every time.
525HP50Attack95Defense180Speed70Sp.Def45Sp.Atk85
Shellder
Cloyster
Weak to
Physical
Hazard Setter
70Speed · Below Avg

Is Cloyster Good in Black 2 & White 2 Playthrough?

Water Stone on Shellder. Water/Ice with AbilitySkill Link. Shell Smash boosts Attack, Sp. Atk, and Speed in one turn, and AbilitySkill Link Icicle Spear always hits five times. After one Shell Smash, Cloyster can clear chunks of the Elite Four rematch. One of the strongest setup options in BW2.

StrongGoodEvenToughBadGEEEEEETEEEEECherenGym 1RoxieGym 2BurghGym 3ElesaGym 4ClayGym 5SkylaGym 6DraydenGym 7MarlonGym 8ShauntalE4GrimsleyE4CaitlinE4MarshalE4IrisChamp*CloysterCatchable
Cheren
Gym 1
Good

Cloyster has the type edge here and should clean up Cheren's team.

You Win
Patrat
Lv 11
Normal
Keen Eye
Work UpBiteTackleDetect
You Win
Lillipup
Lv 13
Normal
Vital Spirit
Work UpBiteTackleHelping Hand
Roxie
Gym 2
Even

Cloyster trades roughly evenly with Roxie's team.

Even
Koffing
Lv 16
Poison
Levitate
SmogAssuranceTackleClear Smog
Even
Whirlipede
Lv 18
BugPoison
Poison Point
VenoshockPoison StingProtectPursuit
Burgh
Gym 3
Even

Cloyster trades roughly evenly with Burgh's team.

Even
Swadloon
Lv 22
BugGrass
Leaf Guard
Struggle BugRazor LeafString ShotProtect
Even
Dwebble
Lv 22
BugRock
Sturdy
Struggle BugSmack DownFeint AttackRock Polish
Even
Leavanny
Lv 24
BugGrass
Swarm
Struggle BugRazor LeafCutString Shot
Elesa
Gym 4
Even

Cloyster trades roughly evenly with Elesa's team.

Even
Emolga
Lv 28
ElectricFlying
Static
Volt SwitchQuick AttackPursuitElectro Ball
Even
Flaaffy
Lv 28
Electric
Static
Volt SwitchTake DownThunder WaveElectro Ball
Risky
Zebstrika
Lv 30
Electric
Motor Drive
Volt SwitchFlame ChargeQuick AttackPursuit
Clay
Gym 5
Even

Cloyster trades roughly evenly with Clay's team.

You Win
Krokorok
Lv 31
GroundDark
Intimidate
BulldozeCrunchSand TombTorment
Even
Sandslash
Lv 31
Ground
Sand Veil
BulldozeCrush ClawRolloutFury Cutter
Risky
Excadrill
Lv 33
GroundSteel
Sand Force
BulldozeMetal ClawSlashRock Slide
Skyla
Gym 6
Even

Cloyster trades roughly evenly with Skyla's team.

Even
Swoobat
Lv 37
PsychicFlying
Unaware
AcrobaticsHeart StampAssuranceAttract
Risky
Skarmory
Lv 37
SteelFlying
Sturdy
Air CutterSteel WingFury AttackAgility
Even
Swanna
Lv 39
WaterFlying
Big Pecks
Air SlashBubble BeamRoostFeather Dance
Drayden
Gym 7
Even

Cloyster trades roughly evenly with Drayden's team.

Even
Druddigon
Lv 46
Dragon
Sheer Force
Dragon TailRevengeSlashCrunch
Risky
Flygon
Lv 46
GroundDragon
Levitate
Dragon TailCrunchEarth PowerRock Slide
Even
Haxorus
Lv 48
Dragon
Mold Breaker
Dragon TailSlashAssuranceDragon Dance
Marlon
Gym 8
Tough

Marlon's team hits Cloyster's weaknesses hard.

Risky
Carracosta
Lv 49
WaterRock
Sturdy
ScaldSmack DownCrunchShell Smash
Even
Wailord
Lv 49
Water
Water Veil
ScaldRolloutBounceAmnesia
Risky
Jellicent
Lv 51
WaterGhost
Cursed Body
ScaldOminous WindBrineRecover
Shauntal
Elite Four
Even

Cloyster trades roughly evenly with Shauntal's team.

Even
Cofagrigus
Lv 56
Ghost
Mummy
Will O WispGrass KnotPsychicShadow Ball
You Win
Drifblim
Lv 56
GhostFlying
Aftermath
PsychicThunderboltAcrobaticsShadow Ball
You Win
Golurk
Lv 56
GroundGhost
Iron Fist
Heavy SlamEarthquakeBrick BreakShadow Punch
Avoid
Chandelure
Lv 58
GhostFire
Flame Body
Energy BallFire BlastPsychicShadow Ball
Grimsley
Elite Four
Even

Cloyster trades roughly evenly with Grimsley's team.

Even
Liepard
Lv 56
Dark
Limber
Night SlashFake OutAerial AceAttract
Even
Scrafty
Lv 56
DarkFighting
Moxie
CrunchBrick BreakPoison JabRock Tomb
You Win
Krookodile
Lv 56
GroundDark
Intimidate
CrunchDragon ClawEarthquakeRock Tomb
Risky
Bisharp
Lv 58
DarkSteel
Defiant
Night SlashX ScissorMetal ClawAerial Ace
Caitlin
Elite Four
Even

Cloyster trades roughly evenly with Caitlin's team.

Even
Musharna
Lv 56
Psychic
Synchronize
Charge BeamDream EaterYawnReflect
You Win
Sigilyph
Lv 56
PsychicFlying
Wonder Skin
PsychicShadow BallIce BeamAir Slash
Even
Reuniclus
Lv 56
Psychic
Magic Guard
PsychicEnergy BallFocus BlastRecover
Risky
Gothitelle
Lv 58
Psychic
Frisk
PsychicShadow BallThunderboltCalm Mind
Marshal
Elite Four
Even

Cloyster trades roughly evenly with Marshal's team.

You Win
Throh
Lv 56
Fighting
Guts
Storm ThrowBulldozeRock TombPayback
Even
Sawk
Lv 56
Fighting
Sturdy
Brick BreakRetaliateRock SlidePayback
Even
Mienshao
Lv 56
Fighting
Regenerator
High Jump KickU TurnBounceRetaliate
Even
Conkeldurr
Lv 58
Fighting
Guts
Hammer ArmBulk UpStone EdgeRetaliate
Iris
Champion
Even

Cloyster trades roughly evenly with Iris's team.

Even
Hydreigon
Lv 57
DarkDragon
Levitate
FlamethrowerCharge BeamDragon PulseSurf
You Win
Druddigon
Lv 57
Dragon
Sheer Force
Rock SlideFlamethrowerDragon TailFocus Blast
You Win
Archeops
Lv 57
RockFlying
Defeatist
AcrobaticsRock SlideDragon ClawEndeavor
Risky
Aggron
Lv 57
SteelRock
Rock Head
EarthquakeDouble EdgeRock SlideAutotomize
Risky
Lapras
Lv 57
WaterIce
Water Absorb
SurfIce BeamThunderboltSing
You Win
Haxorus
Lv 59
Dragon
Mold Breaker
EarthquakeX ScissorDual ChopDragon Dance

Catchable

Post-game only
Type
WaterIce
Tier
S

Catch Cloyster in Undella Town (rippling water fishing, Lv 50-70, rare). Shaking/Bubbling spots.

View Cloyster locations

How to Get Cloyster in Black 2 & White 2

Cloyster sets a stiff fishing test, biting only where the water ripples and even then rarely, though a catch lands big at levels 50 to 70.

How to Get Shiny Cloyster in Black 2 & White 2

Cloyster arises from a Masuda-bred Shellder and a Water Stone, a route that keeps the 1 in 1,024 shiny chance. Compare Shiny Cloyster odds across every game

Normal vs Shiny
Normal Cloyster in Black 2 & White 2Normal
Shiny Cloyster in Black 2 & White 2 Shiny
Color ShiftPurpletoBlue
Shiny TierA Tier Shiny

Shiny Cloyster Evolution

2 Forms
Showing shiny artworkView Full Evolution Chart

Black 2 & White 2 Shiny Cloyster Calculator

2 Methods
Fastest Path

The best route is Masuda Method at full boosts, about 1 in 1,024 on each try. Tune it below.

Step 1 · Encounter Method2 in Black 2 & White 2

Masuda Method: Breed with a parent from a different-language game. Works on any breedable line.

Full Odds: Walk through grass, surf, or fish. Every encounter is its own independent shiny roll.

Step 2 · Boost Your Oddstap to add
+2 rolls

How many you have done, or plan to do.

120,000
Shiny Odds Per Try1 / 1,024Masuda Method
Chance By Now50.0%at 710 eggs hatchedAbout 5 in 10 hunters have one by now
What To Expect
ChanceEncounters
10%lucky few108
25%one in four295
50%coin flip710
90%very likely2,357
How is this calculated?

Every encounter has the same shiny chance, the Shiny Odds Per Try shown above. Each one is a separate roll that does not care how many you have already done, so the more you hunt, the higher your overall chance of at least one shiny. The formula below turns your odds and your number of tries into that combined chance.

chance after N tries = 1 − (1 − p)^N,  where  p = 1 / odds per try

Example at 1 in 8,192 (classic full odds): about 864 encounters for a 10 percent chance, 5,678 for 50 percent, and 18,862 for 90 percent.

The table above flips that around: it shows how many encounters it takes to reach a 10, 25, 50, and 90 percent chance at your current odds. Turning on boosts like the Shiny Charm, sandwiches, or chains improves your odds, so the encounter numbers drop.

These are estimates, not promises. Most games have no pity counter, meaning no guaranteed shiny no matter how many you hunt, so even Very Likely is not guaranteed: some hunters find one early, others go well past that point.

Where these shiny odds come from: Read our full methodology

Want exact numbers for your session? Calculate your shiny odds in Black 2 & White 2 with Cloyster preloaded.

Cloyster Weakness

Cloyster's Water/Ice typing leaves it vulnerable to Electric, Grass, Fighting, and Rock. Cloyster's physical bulk (base 180 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.

Cloyster Weakness and Resistance Chart
DamageTypes
2x (Weak)Electric, Grass, Fighting, Rock
0.5x (Resist)Water
0.25x (Resist)Ice
Gen V Type Chart
  • Fairy type does not exist — Dragon has fewer checks
  • Physical / Special split now per-move (introduced Gen IV)

What is Cloyster Weak Against

Vulnerable
4Weak
2Resist
0Immune
Score-5
4xCritical
None
½xResist
¼xResist
0xImmune
None

What is Cloyster Strong Against

6Strong
1Resisted
0Immune
Score+5
½xResisted
0xImmune
None

Best Pokemon Against Cloyster

Heracross
Heracross
BugFighting
B
C
Cobalion
Cobalion
SteelFighting
B
Poliwrath
Poliwrath
WaterFighting
C
Mienshao
Mienshao
Fighting
B

Cloyster Evolutions

Getting Cloyster requires an evolution item, not just grinding levels. The chain starts at Shellder. Breed this form to get Shellder eggs (average hatch time). Defense grew the most through evolution (+80 over Shellder), and Cloyster peaks at 525 total stats. View every chain in the Evolution Chart.

How to Evolve

2 Forms
Stat Comparison 2 Stages
Cloyster
WaterIce
HP
30
50+20
ATK
65
95+30
DEF
100
180+80
SP.ATK
45
85+40
SP.DEF
25
45+20
SPE
40
70+30
BST
305F-Tier
525S-Tier+220
ROLE
Balanced
Balanced
TYPE
Physical
Mixed

Breeding

Very Easy

Breed with Cloyster to get Shellder eggs easily using 25 partners from the Water 3 egg group. Notable egg moves include Aqua Ring, Avalanche, Barrier and 9 more.

Egg Groups
Water 3
Gender
♂50.0%♀50.0%
Hatch Time
20 cycles·5,140 steps
Quick~5 min with Flame Body
Egg Moves
12moves
Breed With (best first)
drapioncrawdauntcorsolaskorupicorphisharcheopsomastarkabutopscarracostaarchenomanytekabuto

B2W2 Cloyster Best Moveset

One MoveShell Smash boosts Attack, Sp. Atk, and Speed by two stages each. AbilitySkill Link makes MoveIcicle Spear hit five times at boosted power, and opponents need priority moves or a surviving faster Pokemon to answer it after the setup turn. The moveset ends games after one boost if nothing stops it immediately.

Best Build

Experimental
Support
Ability
Skill Link
Item
Focus SashSURVIVAL
Best Nature for Cloyster
Jolly+SPE

Cloyster best EVs are Attack and Speed

EVs

Support Moveset

  • Icicle SpearSTAB
  • Shell Smash
  • Rapid Spin
  • SpikesHazard

Recommended Teammates

Moves List

You'll want to breed for Aqua Ring and Avalanche on Cloyster. These egg moves aren't just nice to have. Combined with STAB from Blizzard and Hydro Pump, they expand what Cloyster can actually threaten in practice.

Level-Up Moves

Lv 1
Aurora Beam
—9710020Ice
Lv 1
Protect+4
C——10Normal
Lv 1
Supersonic
D—5520Normal
Lv 1
Toxic Spikes
C——20Poison
Lv 1
Withdraw
———40Water
Lv 13
Spike Cannon
—2010015Normal
Lv 28
Spikes
B——20Ground
Lv 52
Icicle Crash
C1279010Ice

TM Moves

TM
TM45C—10015Normal
TM14C180705Ice
TM32
Double TeamBattle Subway
———15Normal
TM64
ExplosionBattle Subway
B2501005Normal
TM42C7010020Normal
TM79
Frost BreathBattle Subway
C909010Ice
TM21D—10020Normal
TM68B150905Normal
TM07———10Ice
TM10
Hidden PowerBattle Subway
—6010015Normal
TM15C150905Normal
TM13C14210010Ice
TM84
Poison JabMoor of Icirrus
C8010020Poison
TM17
Protect+4Battle Subway
C——10Normal
TM18C——5Water
TM27D—10020Normal
TM48
RoundBattle Subway
D6010015Normal
TM90C——10Normal
HM03C14210015Water
TM87
SwaggerBattle Subway
——9015Normal
TM41——10015Dark
TM06C—9010Poison

Egg Moves

Egg
Egg
Aqua Ring
D——20Water
Egg
Avalanche-4
C9010010Ice
Egg
Barrier
D——30Psychic
Egg
Bubble Beam
C9710020Water
Egg
Icicle Spear
B3710030Ice
Egg
Mud Shot
D559515Ground
Egg
Rapid Spin
B5010040Normal
Egg
Rock Blast
D259010Rock
Egg
Screech
——8540Normal
Egg
Take Down
C908520Normal
Egg
Twineedle
—2510020Bug
Egg
Water Pulse
C9010020Water

Tutor Moves

Tut
Tutor
Icy Wind
C829515Ice
Tutor
Iron Defense
D——15Steel
Tutor
Signal Beam
C7510015Bug
Tutor
Sleep Talk
C——10Normal
Tutor
Snore
D4010015Normal

Reminder Moves

Rem
Rem
Brine
C9710010Water
Rem
Clamp
—528515Water
Rem
Hydro Pump
C180805Water
Rem
Ice Beam
C14210010Ice
Rem
Ice Shard+1
D6010030Ice
Rem
Icicle Spear
B3710030Ice
Rem
Iron Defense
D——15Steel
Rem
Leer
——10030Normal
Rem
Razor Shell
C1129510Water
Rem
Shell Smash
B——15Normal
Rem
Tackle
D5010035Normal
Rem
Whirlpool
D528515Water

Transfer Moves

Gen
Gen 4
Captivate
——10020Normal
Gen 3
Double-Edge
C12010015Normal
Gen 4
Endure+4
C——10Normal
Gen 3
Mimic
———10Normal
Gen 4
Natural Gift
——10015Normal
Gen 4
Secret Power
—7010020Normal
Gen 4
Swift
—60—20Normal

Base Stats

Base Stats
High
HP50
D
Attack95
B
Defense180
S
Sp. Atk85
C
Sp. Def45
D
Speed70
C
Total525
Details
Catch Rate
Challenging60 / 255
Growth Rate
Slow1.25M XP
Height1.5 m
Weight132.5 kg
Base XP184
Abilities
Shell Armor
Protects against critical hits.
Skill Link
Extends two-to-five-hit moves and triple kick to their full length every time.
OvercoatHidden Ability
Protects against damage from weather.
EV Yield
HPAtkDef+2SpASpDSpe
Defense training target
Pokedex Entry

It fights by keeping its shell tightly shut for protection and by shooting spikes to repel foes.

Pokemon Black 2 / Pokemon White 2

Cloyster Event Distributions

In Black 2 & White 2, Cloyster has been offered just once as a Mystery Gift event Pokemon.

Blast Away the Competition!Jan 2013BlackWhiteBlack 2White 2Not shiny
Lv 30 OT: Abram Poke Ball Event Ribbon
Moves: Icicle Spear, Rock Blast, Hidden Power, Razor Shell
from Jan 2013

Cloyster Black 2 & White 2 Guide

  • Yes. Wild Cloyster in Black 2 & White 2 can hold Pearl (50%) or Big Pearl (5%). Use Thief (TM46) or Covet to swipe the held item without affecting your catch chance. Quickest way to farm rare items like Pearl.

  • Yes. Cloyster is a post-game Pokemon. You need to defeat the Elite Four and enter the Hall of Fame first. Cloyster becomes available after the main story is complete in Black 2 & White 2.

  • In Black 2 & White 2, use Cloyster as a hazard setter. Physical side carries the damage. Speed is middling,

  • For Black 2 & White 2, build your team around Groudon, Arceus, and Ho Oh. These have the highest co-usage rates with Cloyster in competitive formats. They cover each other's weaknesses.

  • Overcoat is the hidden ability. Protects against damage from weather. Not always the best choice. Compare it to Cloyster's regular abilities before committing.

Game Availability

One of the original 151, Cloyster has appeared in 20 games: most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.

Explore

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