You may have Spark Double enter the battlefield as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.
Near Mint - $8.40
Lightly Played - $7.50
Played - $5.90
Heavily Played - $5.00
Damaged - $4.20
Near Mint Non-English - $8.40
Lightly Played Non-English - $7.50
Played Non-English - $5.90
Heavily Played Non-English - $5.00
Damaged Non-English - $4.20
Foil Prices
Near Mint Foil - $9.30
Lightly Played Foil - $8.40
Played Foil - $6.50
Heavily Played Foil - $5.60
Damaged Foil - $4.70
Near Mint Foil Non-English - $9.30
Lightly Played Foil Non-English - $8.40
Played Foil Non-English - $6.50
Heavily Played Foil Non-English - $5.60
Damaged Foil Non-English - $4.70