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 - £8.20
Lightly Played - £7.00
Moderately Played - £5.70
Heavily Played - £4.10
Damaged - £2.50
Near Mint Non English - £8.20
Lightly Played Non English - £7.00
Moderately Played Non English - £5.70
Heavily Played Non English - £4.10
Damaged Non English - £2.50
Foil Prices
Near Mint Foil - £15.50
Lightly Played Foil - £13.20
Moderately Played Foil - £10.90
Heavily Played Foil - £7.80
Damaged Foil - £4.70
Near Mint Foil Non English - £15.50
Lightly Played Foil Non English - £13.20
Moderately Played Foil Non English - £10.90
Heavily Played Foil Non English - £7.80
Damaged Foil Non English - £4.70