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.
NM-Mint - $6.80
Lightly Played - $6.50
Moderately Played - $6.10
Heavily Played - $5.40
Damaged - $4.40
NM-Mint Non English - $6.80
Lightly Played Non English - $6.50
Moderately Played Non English - $6.10
Heavily Played Non English - $5.40
Damaged Non English - $4.40
Foil Prices
NM-Mint Foil - $15.00
Lightly Played Foil - $14.20
Moderately Played Foil - $13.50
Heavily Played Foil - $12.00
Damaged Foil - $9.80
NM-Mint Foil Non English - $15.00
Lightly Played Foil Non English - $14.20
Moderately Played Foil Non English - $13.50
Heavily Played Foil Non English - $12.00
Damaged Foil Non English - $9.80