Type: Item Creation
Source: Dragon #338
The staff you carry is a repository of great power.
Prerequisite: Caster level 9th, ability to imbue a staff.
Benefit: You permanently lose one of your arcane spell slots to invest an arcane spell of that level into your imbued staff. The spell invested must be one that you are able to cast and can be of a level no higher than 2 levels below the highest-level spell you can cast. Once imbued in this way, the spell chosen can be cast from the staff three times per day as a spell-like ability. Casting an invested spell in this way does not require any normal material components, but any XP cost or costly material components must still be paid. You must be in direct physical contact with your imbued staff to cast an invested spell. This feat uses a spell slot equal to the level of the spell being invested, however, you may choose to modify the spell with any metamagic feat you know and adjust the spell's level and slot accordingly. The caster level and DC for an invested spell is calculated as if you cast the spell.
Special: This feat maybe taken multiple times. Its effects do not stack. Each time you take the feat, select a new spell to invest. If the imbued staff is ever destroyed, the use of this ability is lost until a new staff is imbued. The ritual for preparing the staff to receive this feat requires 24 hours, and expends materials valued at 500 gp per level of the spell to be invested.