Dragonlord Opala

Flying, first strike
Whenever Dragonlord Opala attacks, other
attacking creatures you control get +1/+1 until
end of turn.
Retaliate -- At the beginning of each end step, if
three or more creatures died under your control
this turn, you may put Dragonlord Opala from
your graveyard onto the battlefield tapped under
your control.