Spell Enhancer

(Spell Compendium, page 198, DnD 3.5)

Transmutation

Level: ; Sorcerer/Wizard 4
Components: V
Casting Time: 1 swift action
Range: Personal
Target: You
Duration: 1 round

You utter an ancient word tied to the fundamental principles of magic and immediately begin casting another spell.

This spell enhances the next spell you cast, making it more difficult for targets to resist. The next spell you cast this round is cast at +2 caster level, and its save DC increases by 1.