When Chthonian Nightmare enters the battlefield, you get EEE.
Pay X E, Sacrifice a creature, Return Cthonian Nightmare to its owner's hand: Return target creature card with mana value X from your graveyard to the battlefield. Activate only as a sorcery.
Near Mint - $18.00
Lightly Played - $17.00
Moderately Played - $13.50
Heavily Played - $10.75
Damaged - $7.25
Near Mint Non-English - $18.00
Lightly Played Non-English - $17.00
Moderately Played Non-English - $13.50
Heavily Played Non-English - $10.75
Damaged Non-English - $7.25
Foil Prices
Near Mint Foil - $35.75
Lightly Played Foil - $34.00
Moderately Played Foil - $27.00
Heavily Played Foil - $21.50
Damaged Foil - $14.50
Near Mint Foil Non-English - $35.75
Lightly Played Foil Non-English - $34.00
Moderately Played Foil Non-English - $27.00
Heavily Played Foil Non-English - $21.50
Damaged Foil Non-English - $14.50