Kalastria Vizkopa

Kalastria Vizkopa is unblockable.
When Kalastria Vizkopa enters the battlefield exile one card from target players hand. You may spend
mana as though it were mana of any type to cast the exiled spell. Whenever Kalastria Vizkopa leaves the battlefield, you may sacrifice a creature you control and return Kalastria Vizkopa to your hand.