Ajani Vengeant - 154 M ALA

+1: Target permanent doesn't untap during its controller's next untap step.
−2: Ajani deals 3 damage to any target and you gain 3 life.
−7: Destroy all lands target player controls.

mythic
Legendary Planeswalker — Ajani
From the Magic: The Gathering set Shards of Alara.