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 if that permanent is legendary.
Near Mint - $7.00
Lightly Played - $5.60
Moderately Played - $4.90
Heavily Played - $4.20
Damaged - $3.50
Near Mint Spanish - $7.00
Lightly Played Spanish - $5.60
Moderately Played Spanish - $4.90
Heavily Played Spanish - $4.20
Damaged Spanish - $3.50
Foil Prices
Near Mint Foil - $9.10
Lightly Played Foil - $7.30
Moderately Played Foil - $6.40
Heavily Played Foil - $5.50
Damaged Foil - $4.60
Near Mint Foil Spanish - $9.10
Lightly Played Foil Spanish - $7.30
Moderately Played Foil Spanish - $6.40
Heavily Played Foil Spanish - $5.50
Damaged Foil Spanish - $4.60