Vecna, The First

Shroud

Partner with Eleven or Dustin Henderson

At each upkeep other than yours, any player other than
you may pay {4}. If they do, Vecna phases out, that
player draws a card, and you lose 4 life.

Whenever you cast a spell, return target creature card with
mana value equal to this creature's power from a
graveyard to the battlefield under your control.