Level: Sorcerer 7, Wizard 7
Components: V, S, F
Casting Time: 1 standard action
Range: Personal
Effect: Matrix that holds two of your spells
You prepare a magical matrix that allows you to store two of your spells and use one or both later as a swift action.
In the round after you cast spell matrix, you can cast two spells of up to 3rd level to be stored in it. The matrix closes after 2 rounds, whether or not you have stored any spell in it. Only a spell that can be altered by the Quicken Spell feat can be placed in the matrix, and any spell stored there is treated as a prepared spell. Casting spell matrix deals 2d6 points of damage to you, and this damage cannot be healed by any means while the matrix exists.
While the matrix is active, you can cast a spell stored in it as a swift action. Once it is cast from the matrix, the spell is gone. You can also decide to link the two spells stored in the matrix into a spell sequence if both are 2nd level or lower. You can then discharge the two linked spells as a single swift action, just as if you were casting the lone spell from a spell matrix.
A dispel magic spell that successfully dispels the matrix also dispels any spells held inside it. If you are affected by an antimagic field, the duration of the matrix is interrupted, but the spells do not activate. The matrix becomes active again when you emerge from the antimagic field. If you die while any spells are still held in the matrix, both the spells and the matrix dissipate harmlessly.
Focus: A sapphire with a minimum value of 1,000 gp.
Source: Spell Compendium, page 199.