Xezzuk, Eldritch King

Eminence — At the beginning of each player's
upkeep, if Xezzuk, Eldritch King is in the
command zone or on the battlefield, that player
mills 2.
Flying, Trample, Menace, Delve
Sacrifice a creature: Return a permanent card
with lesser converted mana cost from a graveyard
to the battlefield under your control.