Chaos Emperor Dragon

You can Exile 1 White and 1 Black Creature Spell from your Graveyard instead of paying this card's Mana Cost.

When this card enters: you can pay 5 life, and if you do send as many cards in both player's hands, and as many nonland permanents on the field as possible to the Graveyard. Then Chaos Emperor Dragon inflicts damage to target opponent equal to the number of cards sent to the Graveyard by this effect.