Ghalta, Primal Devourer

Dinosaur offering (You may cast this card any time you could cast an instant by sacrificing a Dinosaur and paying the difference in mana costs between this and the sacrificed Dinosaur. Mana cost includes color.)
Trample, Reach
When Ghalta, Primal Devourer enters the battlefield you may have it fight a target creature an opponent controls.
Sacrifice another creature: Draw cards equal to the sacrificed creature's power, then you gain life equal to its toughness.