On Attack

Diablo II Notation Basic Class Skill Item Ally Quest Area Monster Tale All Skills Fire Skills Skill bonus Oskill Aura Equipped Charges Charged suffix Chance to Cast On Attack On Striking When Struck When You Die Kill an Enemy Level-up Chance to Cast on Attack is applied whenever using a melee attack even when that attack misses or gets blocked, or if Dodge, Evade or Weapon Block are applied. Not applied when using a ranged attack or missile weapon (Amazon bow, bow or crossbow), except when a Werewolf or Werebear is using a missile weapon with a melee attack. Applied by Blade Shield, although it is applied as on Striking. Charged Bolt and Frozen Orb are cast at the target from the user's location; all other skills below are cast at or from the target's location. Sorceress skill On Attack suffixes can spawn on magic, rare and crafted items. On Attack suffixes are in the same affix group as on Striking, When Struck and charged suffixes. Skill Level % Chance Source Min Rlvl Min Alvl Fire Bolt 3 5 Weapon 1 4 6 4 10 15 20 Ice Bolt 3 5 Weapon 1 4 6 Lightning 3 5 Weapon 1 13 18 Chain Lightning 3 5 Amulet Weapon 1 Ring 18 25 3 8 26 35 5 8 33 45 1 Excluding missile weapons Skill Level % Chance Source Min Rlvl Ladder Charged Bolt 20 20 Last Wish axe/sword/hammer 65 Yes Fire Ball 6 10 Todesfaelle Flamme Zweihander 46 No 16-20 10 Hellslayer Decapitator 2 66 No Nova 22 15 Destruction polearm/sword 65 Yes Chain Lightning 14-20 5 Lightsabre Phase Blade 2 58 No Glacial Spike 18 25 Death axe/sword 55 Yes Frozen Orb 21 16 Rift polearm/scepter 53 Yes 2 As detailed here, the Fire Ball/Chain Lightning skill level on these two items is not randomly selected.