Rhavnau, The Scale Piercer

Haste

Whenever Rhavnau attacks, you may discard a card and then draw a card. If you do, you may have Rhavnau deals X damage to any target. Where X is the mana vaule
to that discard card.

Whenever another creature dies, put a +1/+1 on Rhavnau.

"You killed him ?!?! But I wanted to kill him!"