Frost and Death is a Class Hall advancement that can be bought for Acherus: The Ebon Hold. It makes Eran Droll appear, who can recruit Ebon Knight Frostreavers.
Description[]
You are now able to recruit Ebon Knight Frostreavers, a powerful troop type. Frostreavers have a random Ability and can counter either Minions, Spells or Hazards, in addition to: Frost Reaver : Increases success chance of missions by 30%.