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 - $4.00
Lightly Played - $3.75
Moderately Played - $3.00
Heavily Played - $2.50
Damaged - $1.75
Near Mint Non-English - $4.00
Lightly Played Non-English - $3.75
Moderately Played Non-English - $3.00
Heavily Played Non-English - $2.50
Damaged Non-English - $1.75
Foil Prices
Near Mint Foil - $13.75
Lightly Played Foil - $13.00
Moderately Played Foil - $10.25
Heavily Played Foil - $8.25
Damaged Foil - $5.50
Near Mint Foil Non-English - $13.75
Lightly Played Foil Non-English - $13.00
Moderately Played Foil Non-English - $10.25
Heavily Played Foil Non-English - $8.25
Damaged Foil Non-English - $5.50