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.
NM-Mint - $1.20
Lightly Played - $1.20
Moderately Played - $1.10
Heavily Played - $1.00
Damaged - $0.80
NM-Mint Non English - $1.20
Lightly Played Non English - $1.20
Moderately Played Non English - $1.10
Heavily Played Non English - $1.00
Damaged Non English - $0.80