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 - $900
Lightly Played - $700
Moderately Played - $600
Heavily Played - $600
Damaged - $500
Near Mint Spanish - $900
Lightly Played Spanish - $700
Moderately Played Spanish - $600
Heavily Played Spanish - $600
Damaged Spanish - $500
Foil Prices
Near Mint Foil - $4,000
Lightly Played Foil - $3,200
Moderately Played Foil - $2,800
Heavily Played Foil - $2,400
Damaged Foil - $2,000
Near Mint Foil Spanish - $4,000
Lightly Played Foil Spanish - $3,200
Moderately Played Foil Spanish - $2,800
Heavily Played Foil Spanish - $2,400
Damaged Foil Spanish - $2,000