Oath of Nicol Bolas

When Oath of Bolas enters the battlefield, destroy target non-Bolas planeswalker you don't control.
Whenever you activate a loyalty ability of a planeswalker you control, you gain 1 life, scry 1,
and Oath of Bolas deals 1 damage to any target.
"For the sake of myself, I will keep watch... over your graves! I swear to destroy you, Gatewatch!" - Nicol
Bolas