Grave Robbery

Choose target graveyard , remove target artifact
card and put it into exile.
At the start of your upkeep choose one.
•Use: you may cast this card as if it was any color.
•Sell: Target player gains control of exiled card, it remains in exile until they cast it. Create
X treasure tokens where X is the card's CMC.
Why does the dead even have this stuff? It's not
like they're going to need it.