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 - $4.70
Lightly Played - $4.30
Moderately Played - $3.80
Heavily Played - $3.30
Damaged - $2.40
NM-Mint Non English - $4.70
Lightly Played Non English - $4.30
Moderately Played Non English - $3.80
Heavily Played Non English - $3.30
Damaged Non English - $2.40
Foil Prices
NM-Mint Foil - $4.80
Lightly Played Foil - $4.30
Moderately Played Foil - $3.80
Heavily Played Foil - $3.30
Damaged Foil - $2.40
NM-Mint Foil Non English - $4.80
Lightly Played Foil Non English - $4.30
Moderately Played Foil Non English - $3.80
Heavily Played Foil Non English - $3.30
Damaged Foil Non English - $2.40