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 - $6.50
Lightly Played - $6.25
Moderately Played - $5.25
Heavily Played - $4.00
Damaged - $3.25
Near Mint Non-English - $6.50
Lightly Played Non-English - $6.25
Moderately Played Non-English - $5.25
Heavily Played Non-English - $4.00
Damaged Non-English - $3.25
Foil Prices
Near Mint Foil - $14.00
Lightly Played Foil - $13.25
Moderately Played Foil - $11.25
Heavily Played Foil - $8.50
Damaged Foil - $7.00
Near Mint Foil Non-English - $14.00
Lightly Played Foil Non-English - $13.25
Moderately Played Foil Non-English - $11.25
Heavily Played Foil Non-English - $8.50
Damaged Foil Non-English - $7.00