Sha' Nova of the Pointed Edge

{w/b}, Pay 2 life: The next time a creature enters
the battlefield under you control this turn,
Sha' Nova of the Pointed Edge deals 1 damage to
it. At the begenning of the next end step, if that
creature has not left the battlefield this turn,
draw a card. Activate only as a sorcery.
"Knowledge of self is greater than the heaviest steel."
— Proverb of The Coven of the Pointed Edge