Enraged Towncrusher

Engorge {2} (you may discard any number of cards
when you cast this card. Each card discarded this
way pays for {2})
Haste.
When Enraged Towncrusher enters the battlefield, other Dinosaurs you control get
+X/+X and Haste until end of turn, where X is
the number of cards you discarded while casting Enraged Towncrusher.