Red Skull, the Stone Keeper

When Red Skull, the Stone Keeper enters the battlefield, search your library for an artifact card, reveal that card, and exile it with a sacrifice counter on it.
You may play a card you own with a sacrifice counter on it from exile this turn. Do this only if you sacrificed a permanent this turn.
"A lifetime ago, I too sought the stones. I even held one in my hand. But it cast me out, banished me here, guiding others to a treasure I cannot possess."
- Red Skull