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.
NM-Mint Foil - $3.20
Lightly Played Foil - $2.90
Moderately Played Foil - $2.60
Heavily Played Foil - $2.20
Damaged Foil - $1.60
NM-Mint Foil Non English - $3.20
Lightly Played Foil Non English - $2.90
Moderately Played Foil Non English - $2.60
Heavily Played Foil Non English - $2.20
Damaged Foil Non English - $1.60