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 - $14.10
Lightly Played - $12.70
Played - $9.90
Heavily Played - $8.50
Damaged - $7.10
Near Mint Non-English - $14.10
Lightly Played Non-English - $12.70
Played Non-English - $9.90
Heavily Played Non-English - $8.50
Damaged Non-English - $7.10
Foil Prices
Near Mint Foil - $26.00
Lightly Played Foil - $23.40
Played Foil - $18.20
Heavily Played Foil - $15.60
Damaged Foil - $13.00
Near Mint Foil Non-English - $26.00
Lightly Played Foil Non-English - $23.40
Played Foil Non-English - $18.20
Heavily Played Foil Non-English - $15.60
Damaged Foil Non-English - $13.00