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 - $3.700
Lightly Played - $2.900
Moderately Played - $2.600
Heavily Played - $2.200
Damaged - $1.800
Near Mint Spanish - $3.700
Lightly Played Spanish - $2.900
Moderately Played Spanish - $2.600
Heavily Played Spanish - $2.200
Damaged Spanish - $1.800
Foil Prices
Near Mint Foil - $12.500
Lightly Played Foil - $10.000
Moderately Played Foil - $8.700
Heavily Played Foil - $7.500
Damaged Foil - $6.300
Near Mint Foil Spanish - $12.500
Lightly Played Foil Spanish - $10.000
Moderately Played Foil Spanish - $8.700
Heavily Played Foil Spanish - $7.500
Damaged Foil Spanish - $6.300