Treasure Hoarder

When Treasure Hoarder enters the battlefield,
you may sacrifice any number of Treasures. If
you do, put that many +1/+1 counters on
Treasure Hoarder.
Whenever you cast a spell that was paid for with
mana from a Treasure, you may put a +1/+1
counter on Treasure Hoarder.
"I don't care about the gold. I just want the satisfaction of knowing I took it from you."