This spell costs X less to cast, where X is the total toughness of creatures you control.
Defender
2UU: Until end of turn, target creature you control gets +1/+0, gains "Whenever this creature deals combat damage to a player, draw cards equal to its toughness," and can attack as though it didn't have defender.
Near Mint - $2.00
Lightly Played - $1.80
Played - $1.40
Heavily Played - $1.20
Damaged - $1.00
Near Mint Non-English - $2.00
Lightly Played Non-English - $1.80
Played Non-English - $1.40
Heavily Played Non-English - $1.20
Damaged Non-English - $1.00
Foil Prices
Near Mint Foil - $2.40
Lightly Played Foil - $2.10
Played Foil - $1.70
Heavily Played Foil - $1.40
Damaged Foil - $1.20
Near Mint Foil Non-English - $2.40
Lightly Played Foil Non-English - $2.10
Played Foil Non-English - $1.70
Heavily Played Foil Non-English - $1.40
Damaged Foil Non-English - $1.20