Unovan Yamask Raid Guide

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Hey Trainers,

Unovan Yamask will be a Ghost type T1 raid boss during the Halloween 2021 event. Unovan Yamask evolves into Cofagrigus.


Yamask shouldn’t be that difficult to beat, since it’s only a T1 raid. Practically any player can beat it with decently levelled Pokemon. It does have a little bulk, so try not to use any types Yamask resists.

It’s a Ghost type, so it’s weak to Dark and Ghost types. It’s resistant to Bug and Poison types, and it has 2 large resistances being Normal and Fighting.

Top Counters

Shadows and Megas won’t be listed. They’re not necessary to take down a T1 in good time, and Shadow Pokémon are incredibly expensive to power up. However, if you have any of the listed Pokémon as shadow forms, they’re of course better.

# Pokemon Fast Move Charge Move Time to win Deaths
1. Darkrai Snarl Shadow Ball 101.22s 0.50
2. Yveltal Snarl Dark Pulse 113.70s 0.25
3. Banette Shadow Claw Shadow Ball 118.08s 0.00
4. Hoopa Astonish Shadow Ball 107.21s 1.00
5. Weavile Snarl Foul Play 111.24s 0.75
6. Giratina (Origin) Shadow Claw Shadow Ball 109.63s 1.00
7. Mismagius Hex Shadow Ball 122.96s 0.00
8. Chandelure Hex Shadow Ball 100.06s 2.00
9. Alakazam Psycho Cut Shadow Ball 124.92s 0.00
10. Trevenant Shadow Claw Shadow Ball 126.97s 0.00
11. Zarude Bite Dark Pulse 121.38s 0.50
12. Hydreigon Bite Dark Pulse 118.80s 0.75
13. Gengar Lick Shadow Ball 98.41s 2.50
14. Tyranitar Bite Crunch 123.14s 0.50
15. Hoopa (Confined) Astonish Shadow Ball 106.73s 1.80
16. Honchkrow Snarl Dark Pulse 118.21s 1.00
17. Absol Snarl Payback 116.65s 1.13
18. Houndoom Snarl Foul Play 118.80s 1.00
19. Mewtwo Psycho Cut Shadow Ball 110.67s 1.75
20. Sharpedo Bite Crunch 123.70s 1.00
21. Bisharp Snarl Dark Pulse 124.83s 1.00
22. Pangoro Snarl Night Slash 135.94s 0.50
23. Krookodile Snarl Crunch 130.46s 1.17
24. Shiftry Snarl Foul Play 131.92s 1.00
25. Raikou Thunder Shock Shadow Ball 133.15s 1.00

Italics indicate legacy moves.

Stats and Catch CP

Yamask Ghost
Max CP at Level 40 982 | Max CP at Level 50 1110
ATK 95
DEF 141
HP 116
Weak to Strong Against
Dark Ghost Bug Poison Normalx2 Fightingx2


Yamask is boosted by Fog weather.

  • CP range on catch (L20): 516 – 561
  • Weather Boosted CP range on catch (L25): 646 – 701


Fast Moves Charge Moves
  • Astonish Ghost
  • Zen Headbutt Psychic
  • Ominous Wind Ghost
  • Dark Pulse Dark
  • Shadow Ball Ghost
Dark types utterly wall Yamask, so they’re great options.


Yamask only comes around for a portion of the year, and thanks to Cofagrigus getting Shadow Claw recently it has skyrocketed into PvP relevancy. Best to get a good one while you can, and try to get as much XL candy for Ultra League as possible.

Stay safe, trainers!

Related reading

Yveltal Raid Guide

Diglett Raid Guide

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