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 - $3.20
Moderately Played - $2.80
Heavily Played - $2.40
Damaged - $2.00
Near Mint Spanish - $4.00
Lightly Played Spanish - $3.20
Moderately Played Spanish - $2.80
Heavily Played Spanish - $2.40
Damaged Spanish - $2.00
Foil Prices
Near Mint Foil - $14.50
Lightly Played Foil - $11.60
Moderately Played Foil - $10.20
Heavily Played Foil - $8.70
Damaged Foil - $7.30
Near Mint Foil Spanish - $14.50
Lightly Played Foil Spanish - $11.60
Moderately Played Foil Spanish - $10.20
Heavily Played Foil Spanish - $8.70
Damaged Foil Spanish - $7.30