Seath the scaleless

Deathtouch
Whenever you cast this card, create a Primordial Crystal token. As long as the Primordial Crystal
artifact token is on the battlefield, Seath the Scaleless has hexproof and indestructible.
Whenever this card destroys by battle a creature,
exile it with a Curse counter on it.
If a player has 3 or more creatures with a Curse counter on them, that player loses half his or her
life total.