Mang Song's Lesson is an elite unique Archon Staff.
Mang Song's Lesson gives a very high bonus to all skills, as well as a Faster Cast Rate and mana regeneration rate, making it particularly useful among casters. However, its effect on enemy resistances often makes it more valuable to sorceresses specifically.
Stats[]

Mang Song's Lesson
Archon Staff
Two-Hand Damage: 83 to 99
Required Level: 82
Required Strength: 34
Durability: 26
Staff class - Slow Attack Speed
+5 To All Skills
+30% Faster Cast Rate
-(7-15)% To Enemy Lightning Resistance
-(7-15)% To Enemy Cold Resistance
-(7-15)% To Enemy Fire Resistance
Regenerate Mana 10%
+50% Damage To Undead
Ladder Only
Only Spawns in Patch 1.10 or later
Trivia[]
- This item is one of many having Asian-themed names, indicating an as yet unexplored Asian-themed civilization focusing on Archers, most probably concentrated in the region of Xiansai.
Normal Staves — Bane Ash (Short Staff) • Serpent Lord (Long Staff) • Spire of Lazarus (Gnarled Staff) • The Salamander (Battle Staff) • The Iron Jang Bong (War Staff)
Exceptional Staves — Razorswitch (Jo Staff) • Ribcracker (Quarterstaff) • Chromatic Ire (Cedar Staff) • Warpspear (Gothic Staff) • Skull Collector (Rune Staff)
Elite Staves — Ondal's Wisdom (Elder Staff) • Mang Song's Lesson (Archon Staff)
Quest Items — Staff of Kings • Horadric Staff