Chance to Cast Terror when Struck

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

Terror skill page

RollSourceRolls onalvlclvlQuality
15% Chance to Cast Level 1 Terror when StruckArs Al'DiabolosBlasphemous Grimoire80Unique
15% Chance to Cast Level 3 Terror when StruckBoneflameSuccubus Skull72Unique
14% Chance to Cast Level 13 Terror when StruckDeliriumHelms51Runeword