Adalbjorg, Mithril Warden

+3: Deal damage equal to the loyalty of Adalbjorg, Mithril Warden, to 3 target creatures.
+1: Search your library for a Warden Creature, Kaer Creature, or Northern Lights land and put it in your hand.
-20: Destroy all non Warden and Kaer creatures and planeswalkers, then gain mana equal to the creatures killed this turn.