Ulkezath, Angel of Penance

Flying, hexproof from spells with converted
mana cost four or less.
As you draw Ulzezath, reveal it, then put a fate counter on each creature on the battlefield.
When Ulkezath enters the battlefield, each player sacrifices all creatures they control with fate
counters on them. You gain half X life, where X
is the number of creatures sacrificed this way.