Ferocious Manti

When a creature you control attacks and successfully does combat damage to a player, Ferocious Manti becomes Monstrous with X
+1/+1 counters where X is the amount of
damage you dealt to that opponent.
Bloodthirst 2 (As long as your opponent has been
dealt damage this turn, a creature with Bloodthirst
enters the battlefield with X +1/+1 counters.)
Battle Cry (Whenever a creature with Battle
Cry attacks, all creatures you control get +1/+0
until end of turn.)