Pharaoh of the Forgotten

Delve (Each card you exile from your graveyard
while casting this spell pays for {1}.)
Pharaoh of the Forgotten enters the battlefield
with {x} +1/+1 counters on it.
Remove a +1/+1 counter from Pharaoh of the Forgotten: You may cast exiled spells with
converted mana cost X or less without paying
their mana cost, where X is the number of +1/+1 counters on Pharaoh of the Forgotten.