Sarulf, Realm Eater (Showcase Foil)

Whenever a permanent an opponent controls is put into a graveyard from the battlefield, put a +1/+1 counter on Sarulf, Realm Eater.

At the beginning of your upkeep, if Sarulf has one/more +1/+1 counters on it, you may remove all of them. If you do, exile each other nonland permanent with converted mana cost less than/equal to the number of counters removed this way.