Vecna, the Whispered One

Flying, Haste

Whenever a nontoken creature you control dies, you may pay {p/b}, if you do, each opponent sacrifices a creature. You create a 2/2 black zombie creature token.

{t}, {b}, pay 3 life: Create an artifact token named Vecna's Phylactery. Draw a card.

{t}, {u}{b}{r}, discard your hand: Exile Vecna, then return him to the battlefield transformed under his owner’s control. Activate only as a sorcery.