Special
Balanced
303Low
30Very Slow
DTier

Yamask sits at the start of its evolution line — not yet at full power, but that changes fast. Most trainers push through to Cofagrigus as fast as possible. Normal and Fighting moves can't touch it, and only 2 types hit it super-effectively. Known as the Spirit Pokemon.

Defense and Sp. Def carry most of Yamask's stat budget. Attack's the obvious dump stat. Common in the wild and yields 1 Defense EV. Follows a medium-fast 1M XP curve.

Base Stats
303Avg
HP38
F
Attack30
F
Defense85
C
Sp. Atk55
D
Sp. Def65
C
Speed30
F
Total303
Low <60
Avg 60-89
High 90-149
Top 150+
EV YieldDefeating Yamask yields +1 Def
HPAtkDef+1SpASpDSpe
Details
Catch190EasyMedium Fast1M XP0.5m / 1'08"1.5kg / 3.3 lbs61Base XP
Pokedex Entries

A clay slab with cursed engravings took possession of a Yamask. The slab is said to be absorbing the Yamask’s dark power.

Sword

It’s said that this Pokémon was formed when an ancient clay tablet was drawn to a vengeful spirit.

Shield

Yamask Weakness

Excellent

Type-wise, Yamask takes extra damage from Ghost and Dark. Normal and Fighting moves do nothing thanks to a full immunity.

4xCriticali
None
2xWeaki
½xResisti
¼xResisti
None
STAB (2)i
2Weak
2Resist
2Immune
Scorei+4
SpikesGrounded — up to 25%
Toxic SpikesVulnerable
Abilities
MummyChanges attacking Pokémon's abilities to Mummy on contact.

One evolution ahead. Yamask grows into Cofagrigus through a straightforward two-stage chain. No compatible partners for breeding via two egg groups. Eggs are average hatch time. Evolving adds up to 180 stat points total.

How to Evolve

2 Forms
Stat Comparison 2 Stages
Yamask
Ghost
HP
38
58+20
ATK
30
50+20
DEF
85
145+60
SP.ATK
55
95+40
SP.DEF
65
105+40
SPE
30
30
BST
303D-Tier
483C-Tier+180
ROLE
Balanced
Trick Room
TYPE
Special
Special
Breeding
Very Easy

Breed Yamask easily from the Indeterminate and Mineral egg groups.

Egg Groups
IndeterminateMineral
Gender
50.0%50.0%
Hatch Time
25 cycles·6,425 steps
Moderate~6 min with Flame Body

The build centers on Toxic Spikes and survivability. Eviolite means a bulk boost that only works before full evolution, and a spread EV build EVs give Yamask the bulk to set up repeatedly. Mummy adds another layer of staying power.

Best Build

Wall
Ability
Mummy
Item
EvioliteBULK
Nature
Relaxed+DEF
EVs

Best Yamask Moveset

  • Will O Wisp
  • HexSTAB
  • Knock Off
  • Toxic Spikes

TMs carry this one. Yamask learns Phantom Force and Shadow Ball naturally for STAB, but the offensive range comes almost entirely from technical machines. Psychic and Bug and beyond give it real matchup play.

Level-Up Moves

Lv 1
Confusion
5010025Psychic
Lv 1
Protect+4
10Normal
Lv 4
Haze
30Ice
Lv 8
Confuse Ray
10010Ghost
Lv 12
Fake Tears
10020Dark
Lv 16
Will-O-Wisp
8515Fire
Lv 22
Infestation
2010020Bug
Lv 30
Psyshock
8010010Psychic
Lv 36
Curse
10Ghost
Lv 40
Shadow Ball
8010015Ghost
Lv 44
Dark Pulse
8010015Dark
Lv 46
Phantom Force
9010010Ghost
Lv 48
Parting Shot
10020Dark

TM Moves

Src
TM06
Calm Mind
20Psychic
TM91
Curse
10Ghost
TM90
Dark Pulse
8010015Dark
TM127
Dream Eater
10010015Psychic
TM35
Endure+4
10Normal
TM26
Energy Ball
9010010Grass
TM109
Facade
7010020Normal
TM97
Heal Block
10015Psychic
TM80
Iron Defense
15Steel
TM45
Knock Off
6510020Dark
TM46
Mud Shot
559515Ground
TM83
Nasty Plot
20Dark
TM119
Ominous Wind
601005Ghost
TM17
Protect+4
10Normal
TM63
Psychic
9010010Psychic
TM03
Psyshock
8010010Psychic
TM51
Safeguard
25Normal
TM48
Self-Destruct
2001005Normal
TM74
Shadow Ball
8010015Ghost
TM61
Shadow Claw
7010015Ghost
TM118
Shadow Punch
6020Ghost
TM37
Stealth Rock
20Rock
TM85
Substitute
10Normal
TM08
Thunder Wave
9020Electric
TM89
Toxic Spikes
20Poison
TM57
Will-O-Wisp
8515Fire
TM59
Zen Headbutt
809015Psychic

Egg Moves

Yamask doesn't have any Egg moves

Tutor Moves

Yamask can't learn any Tutor moves

Yamask doesn't appear in Legends: Z-A. Transfer it from Black, Black 2, or Sword to add it to your collection. Check the source games below for encounter details.

Yamask is not available as a wild encounter in this game.

Also found in:

  • Yamask is meant to evolve into Cofagrigus. At 303 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.

  • Yamask's biggest threats include Dusknoir (Ghost) and Weavile (Dark), all carrying super-effective STAB moves. Only 2 weaknesses means fewer dedicated counters to worry about. At base 30 Speed, Yamask won't outrun any of these threats so switching to a resist is usually the safer play.

  • Yamask can evolve into Cofagrigus and Galarian Runerigus depending on the method. Yamask is the base form in a 3-stage evolutionary line.

  • Mummy is the go-to ability for Yamask. It changes attacking Pokémon's abilities to Mummy on contact. It's Yamask's only ability.

  • Base 30 Speed is low. Priority moves or Trick Room are the way to go. On offense, Yamask is a special attacker with base 55 Sp. Atk.

  • Yamask appears in 8 games, including Black & White, Black 2 & White 2, and X & Y.

Since debuting in Black & White, Yamask has appeared in 8 titles over 5 generations. Along the way, it received a Galarian form in Generation 8, keeping it relevant across different competitive metas.