Cofagrigus

[peter1994]

Ability: Mummy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Will-O-Wisp
- Pain Split
- Protect
- Night Shade
Item rocky helmet

[Medaforcer]

Is it singles or doubles? I'm gonna assume VGC where he has the really awesome combo of Ally Switch(has +1 priority) + Mummy. Honestly after the first time you use it the mind games become pretty unreal. The teammates with that one are pretty important.

He has a respectable 95 special attack as well so I wouldn't be afraid to use Hex or Shadowball instead of Night Shade.

[matabro]

In singles I would run haze instead of protect and shadowball instead of nightshade