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 - $7.10
Near Mint Non-English - $7.10
Lightly Played - $6.40
Lightly Played Non-English - $6.40
Played - $5.00
Played Non-English - $5.00
Heavily Played - $4.30
Heavily Played Non-English - $4.30
Damaged - $3.60
Damaged Non-English - $3.60
Foil Prices
Near Mint Foil - $8.30
Near Mint Foil Non-English - $8.30
Lightly Played Foil - $7.40
Lightly Played Foil Non-English - $7.40
Played Foil - $5.80
Played Foil Non-English - $5.80
Heavily Played Foil - $5.00
Heavily Played Foil Non-English - $5.00
Damaged Foil - $4.20
Damaged Foil Non-English - $4.20