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.
NM-Mint - $10.70
Lightly Played - $9.60
Moderately Played - $8.50
Heavily Played - $7.50
Damaged - $5.40
NM-Mint Non English - $10.70
Lightly Played Non English - $9.60
Moderately Played Non English - $8.50
Heavily Played Non English - $7.50
Damaged Non English - $5.40