Dread Hound Keeper

When Dread Hound Keeper enters the battlefield create two 2/2 black dog creature tokens with deathtouch.
Flying
Unearth {b}{b} ({b}{b}: Return this card from your graveyard to the battlefield. It gains Haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)