When Mesmeric Fiend enters the battlefield, target opponent reveals their hand and you choose a nonland card from it. Exile that card. When Mesmeric Fiend leaves the battlefield, return the exiled card to its owner's hand.
Near Mint - $0.40
Lightly Played - $0.40
Played - $0.30
Heavily Played - $0.30
Damaged - $0.20
Near Mint Non-English - $0.40
Lightly Played Non-English - $0.40
Played Non-English - $0.30
Heavily Played Non-English - $0.30
Damaged Non-English - $0.20