If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.
Near Mint - £8.50
Lightly Played - £7.20
Moderately Played - £6.00
Heavily Played - £4.30
Damaged - £2.60
Near Mint Non English - £8.50
Lightly Played Non English - £7.20
Moderately Played Non English - £6.00
Heavily Played Non English - £4.30
Damaged Non English - £2.60