Chance to Cast Venom when Struck

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

Venom skill page

RollSourceRolls onalvlclvlQuality
20% Chance to Cast Level 18 Venom when StruckDragonBody armor61Runeword
20% Chance to Cast Level 18 Venom when StruckDragonShields61Runeword