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.
Near Mint - £5.40
Lightly Played - £4.60
Moderately Played - £3.80
Heavily Played - £2.70
Damaged - £1.70
Near Mint Non English - £5.40
Lightly Played Non English - £4.60
Moderately Played Non English - £3.80
Heavily Played Non English - £2.70
Damaged Non English - £1.70
Foil Prices
Near Mint Foil - £12.00
Lightly Played Foil - £10.20
Moderately Played Foil - £8.40
Heavily Played Foil - £6.00
Damaged Foil - £3.60
Near Mint Foil Non English - £12.00
Lightly Played Foil Non English - £10.20
Moderately Played Foil Non English - £8.40
Heavily Played Foil Non English - £6.00
Damaged Foil Non English - £3.60