Needs review
Source: Races of Stone

Description: You can create rune circles, stationary magic items that hold a variety of spells and effects.

Prerequisites: 5th Level Caster

You can create a rune circle whose prerequisites you meet. Creating a rune circle takes one day for each 1,000 gp in its price. To create a rune circle, you must spend 1/25 of the item's price in XP and use up raw materials costing one-half of this price.

You can also mend a broken rune circle if it is one that you could make. Doing so costs half the XP, half the raw materials, and half the time it would take to craft that item in the first place. Some rune circles incur extra costs in material components or XP, as noted in their descriptions. These costs are in addition to those derived from the item's base price.