Xandri, Demon Born

+7: Return up to 7 creatures from among the graveyards onto the battlefield under your control. They have "haste and indestructible"
-1: You gain an emblem "Xandri planeswalkers you control are indestructible and must be attacked by creatures your opponents control if able
-X: Deal X damage to each opponent and 2 times X to each creature and planeswalker they control