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 - £4.60
Lightly Played - £4.00
Moderately Played - £3.30
Heavily Played - £2.30
Damaged - £1.40
Near Mint Non English - £4.60
Lightly Played Non English - £4.00
Moderately Played Non English - £3.30
Heavily Played Non English - £2.30
Damaged Non English - £1.40
Foil Prices
Near Mint Foil - £6.20
Lightly Played Foil - £5.20
Moderately Played Foil - £4.30
Heavily Played Foil - £3.10
Damaged Foil - £1.90
Near Mint Foil Non English - £6.20
Lightly Played Foil Non English - £5.20
Moderately Played Foil Non English - £4.30
Heavily Played Foil Non English - £3.10
Damaged Foil Non English - £1.90