Book Of Shard Storm
Wizard spellbook that gives you 95% in Shard Storm, an unsurgeable areaspell that does more damage to unarmored mobs.
Plane: Kzinti Homeworld
Area: Kzinti Spire Of War
Mob: Alchyzer
See Gear In Kzinti Spire Of War for instructions on how to obtain this piece of gear.