Preacher of the Schism (The Lost Caverns of Ixalan)

Creature Ñ Vampire Cleric - Deathtouch
Whenever this creature attacks the player with the most life or tied for most life, create a 1/1 white Vampire creature token with lifelink.
Whenever this creature attacks while you have the most life or are tied for most life, you draw a card and you lose 1 life.