Taelis, Dreadlife Berserker

Flying, lifelink
Whenever Taelis, Dreadlife Berserker attacks, defending player sacrifices up to two creatures. If
no creatures were sacrificed this way, defending
player loses life equal to the number of creature
cards in their graveyard. If only one creature was sacrificed this way, defending player loses life
equal to the number of creatures they control.