Ivrig, the Great Hecatomb

When Ivrig, the Great Hecatomb enters the battlefield, create three 1/1 black Cleric creature tokens with deathtouch.
{w}{b}{g}, Sacrifice a creature: Draw three cards, then put a card from your hand on top of your library face-up. Target opponent loses X life and you gain X life, where X is the converted mana cost of the face-up card.