Needs review
Source: Complete Divine

Description: You can create magic items that are imbued with a connection to your deity.

Prerequisites: Any Item Creation Feat

Relics are magic items - often but not always wondrous items - that rely on a divine connection to a specific deity to function.

Relics

A relic is a magic item—often, but not always, a wondrous item—that functions only when worn or held by a character who believes in the deity to whom the relic is dedicated. That character must devote a measure of spiritual energy to keep open a divine connection between the relic he wields and his deity’s power.

The wielder of a relic can establish the divine connection in two ways. Any divine spellcaster such as a cleric, druid, or paladin of the relevant deity can temporarily sacrifice a spell slot of the level specified in the relic’s description; the divine spellcaster can’t use the spell slot anymore, but he can use the relic. Whenever the cleric or druid prepares spells (or each morning in the case of a spontaneous divine caster), he decides whether or not he wants to keep the divine connection to the relic active.

Relics are generally not available for purchase, nor will PCs trying to sell them automatically find a buyer. They are much more rare than other magic items; usually less than a half-dozen copies of each relic exist. Secondly, they’re tied so tightly to worship of a particular deity, so only a very few characters can use them.

If you create your own relic, price them like you would any other magic item, but give them a discount based on the spell slot a cleric must sacrifice to use them. A discount worth 400 × spell slot level × minimum cleric level is a good starting place. Relics tend to be somewhat more complex than standard magic items. Many have magical effects that no spell duplicates exactly, giving them the feel of “artifacts on the cheap.”