Crimsonshade

Flying, Haste Whenever Crimsonshade attacks, you may sacrifice another creature or artifact. Until end of turn, you may cast artifact spells or activate abilities of artifacts without paying their mana costs.

Crimson Fury — When Crimsonshade deals combat damage to a player, you may exile the top card of your library. If it’s an artifact card, put it onto the battlefield. Otherwise, you may cast it until the end of your next turn.

"This is what awoke me from my slumber?"