Chance to Cast Bone Spirit on Striking

Every source of a stat: magic and rare affixes, uniques, set items and runewords.

Bone Spirit skill page

RollSourceRolls onalvlclvlQuality
30% Chance to Cast Level 20 Bone Spirit on StrikingOathSwords, Axes, Maces59Runeword
5% Chance to Cast Level 10 Bone Spirit on StrikingArm of King LeoricTomb Wand36Unique