The Abhorrasaur

Trample, haste

Whenever The Abhorrasaur deals combat damage
to a player, destroy each creature that player controls with power less than The Abhorrasaur's.

Whenever The Abhorrasaur attacks, you may exile a creature card from a graveyard. If you do, The Abhorrasaur gets +X/+0 until end of turn, where X is that card's power.