Reliquary Warden

Deathtouch
Unseal 3 (If this card would be exiled or put into a graveyard, instead exile it with 3 pact counters on it.)
At the beginning of your upkeep, you may
discard a card. If you do so, remove a pact
counter from Reliquary Warden. When the
last pact counter is removed, return Reliquary
Warden to your hand.