[BASIC] [4], Flip The Lich King >>> When target ally is destroyed this turn, The Lich King heals damage from himself equal to that ally's cost.
Wrath of the Lich King
Once per game: [BASIC] [10] >>> Choose a number. Destroy all opposing abilities, allies, and equipment with that cost. Then each opponent reveals his hand and discards all abilities, allies, and equipment with that cost.