Eldritch Conduit

Transmutation
Level: Artificer * 2, Sorcerer */Wizard * 2, Warlock * 2
Components: V, S, M (a small mirror)
Casting Time: 1 Standard Action
Range: close (25 ft. + 5 ft./2 levels)
Target: one creature
Duration: 1 round/level
Saving Throw: Will negates
Spell Resistance: yes
  Originally created by a disciple of the archwizard Nex, this spell was used to turn enemy soldiers in Geb's undead armies into conduits capable of blasting spell energy back into the far reaches of the Gebite lines. Since then, it has become a favorite among arcane casters with an understanding of battlefield tactics.
  If the target of this spell fails to resist its effects with a Will Save, he becomes outlined in faint radiance, as if via faerie fire. At any time before the eldritch conduit expires, you may cast another spell with an area effect of cone, cylinder, line, or sphere and use the subject of the eldritch conduit as the point of origin for that spell. Doing so ends the spell immediately. The target must be within close range (25 feet + 5 feet/2 levels) in order for you to use the conduit-if the target moves out of range, the eldritch conduit effect persists but cannot be utilized by you until you get back within range.