Ostin, Bunyan Herald

0: Creatures you control gain +3/+1 and Trample until end of turn.
+3: Sacrifice a creature: other creatures you control gain +7/+0 and Trample. Gain life equal to Trample damage dealt this turn.
-10: Gain an emblem with: "Creatures you control gain Shroud, +4/+2, and Trample."