When Keeper of Keys enters the battlefield, you become the monarch.
At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.
For the right price, he'll unlock your path to the throne."
Non Foil / Near Mint - $1.63
Non Foil / Slightly Played - $1.47
Non Foil / Moderately Played - $1.30
Non Foil / Heavily Played - $0.98
Non Foil / Damaged - $0.82