Trishula

Flying, Trample, Annihilator 3, Hexproof When you cast this card, Exile three nonland permanents your opponent controls while this card is on the field. {W}{W}{B}{B}{U}, When this creature dies, cast a Blue, Black, or White Dragon creature spell from your hand or graveyard without paying its mana cost. That creature then gets 3 +1/+1 counters and target creature your opponent controls get -X/-0 where X is equal to half that creature’s power and loses all other abilities.