Staff of the Donjon - Staff

Staff of the Donjon: This heavy staff is made of cold iron, bound with adamant strips. Soldered to the length of the staff are keys and locks. Attached to the head of the staff is the skull of a devil, it's massive horns plated with adamant. The foot is shod with the hoof of a gorgon.

It is said that there is only one Staff of the Donjon, created by the God of Prisons and handed down to his heroes to protect the lands from terrible forces by locking them away. Legend has it that this staff regenerates one charge per year, and that if its wielder dies fighting a great evil, the staff will consume their soul to replace one charge.

This Staff of the Donjon can cast the following spells:

Maze, for 1 charge.
Elemental Swarm, for 1 charge.
Imprisonment, for 2 charges.
Earth Quake, for 2 charges.

Strong Conjuration, Evocation; CL 17th; Craft Staff, earth quake, elemental swarm, maze, imprisonment; Cost 100,000 gp

NPC Gear: 20th
Treasure Value: 21st

Math:
Maze (8th level)8*15*187.5 = 22,500
Earth Quake (8th)8*15*187.5 one quarter cost for 3 charges to use =5,625
Elemental Swarm (9th)9*17*281.25 = 43031.31
Imprisonment (9th) 9*17*375 Half cost for 2 charges to use = 28,687.5

= 99,843.81, rounded up for simplicity