Kaaj, the Huntsman

: Whenever a creature enters the battlefield under an opponent's control, draw a card and you gain 1 life.
+1: Kaaj, the Huntsman deals 3 damage to any target. If that target is a nonred, nongreen creature, it deals 3 damage to that creature's controller.
-7: Search your library for a creature card with converted mana cost 7 or less and put it onto the battlefield. It gains haste until end of turn.