Price (Item Level): 46,000 gp (17th)
Body Slot: — (held)
Caster Level: 17th
Aura: Strong; (DC 23) illusion
Activation: As spell used
Weight: 5 lb.
This staff is formed from wildly twisting rods of solid iron. It bears numerous runes depicting cracked, warped, human skulls.
A runestaff of insanity allows you to cast any of the following spells (each two times per day) by expending a prepared arcane spell or arcane spell slot of the same level or higher.
Prerequisites: Craft Staff, confusion, insanity, lesser confusion, weird.
Cost to Create: 23,000 gp, 1,840 XP, 46 days.
Source: Magic Item Compendium, page 180.