General Rules: Feats - Etch Object Rune

Etch Object Rune [Item Creation] (from The Book of Eldritch Might)
You can etch magical rune stones onto the surface of inanimate objects.
   Prerequisites: Spellcaster level 5th+.
   Benefit: You can create an etched object rune of any spell that you know. Etching an object rune takes one day for each 1,000 shillings in its base price. The base price of an etched object rune is its spell level multiplied by its caster level multiplied by 30 shillings. To etch a rune, you must spend ¹/₂₅ of this base price in experience points and use up raw materials costing ½ of this base price.

Any etched object rune that stores a spell with a costly material component or an experience point cost also carries a commensurate cost. In addition to the costs derived from the base price, you must expend the spell's material component or pay the experience point cost when etching the rune.

Any object with a solid surface can bear an etched rune. Normally, a Small object (or smaller) can have only one object rune, while a Medium-sized object can have two, a Large object can have four, a Huge object eight, and so on. The etching does not harm the object in any way, and once the rune is used, the object returns to normal.

Once an object rune is etched, it can be used like a scroll, as described in the rules for casting spells from scrolls in the Player's Handbook.

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