When imbued it increases the wearer's damage and accuracy in Ranged and Magic by 20% while attacking undead monsters. This is in addition to the 20% boost to Attack and Strength that is already provided by the original Salve amulet (e). If you are attacking several monsters in multi-combat zones then this boost will work with melee as normal. However, for magic and ranged attacks it will only work on your primary targeted opponent.