Oath of the Gatewatch

Whenever a planeswalker you control dies, put a +1/+1 counter on creatures you control, draw a card, gain 3 lives, return target creature from your graveyard to your hand, and Oath of the Gatewatch deals 1 damage to each creature your opponent's control.
{w}{u}{b}{r}{g}: Return target planeswalker card from your graveyard to the battlefield. Until end of turn, the next planeswalker spell you cast costs {3} le