Banshee 21
Death Knight 8 -- You're a big undead fighter in a spiky dark plate armor, and instead of hacking the heroes to pieces with your cursed Sword of Severe Hacking™, you burn them by throwing fireballs ? Go and be a lich !
Ghast 16
Ghost 20
Ghoul 21
Lich 22
Mummy 22
Revenant 16
Skeleton 22
Shadow 18
Specter 18
Vampire 20
Wight 21
Wraith 21
Zombie 21 -- Because "brrrraaaaainnnns..."