Energy Vortex

(Complete Divine, DnD 3.5)

Evocation[Sonic], [Electricity], [Fire], [Acid], [Cold]

Level: ; Cleric 4; Druid 4
Components: V, S
Casting Time: 1 standard action
Range: 20 ft.
Area: All creatures within a 20-ft.-radius burst centered on you
Duration: Instantaneous
Saving Throw: Reflex half
Spell Resistance: Yes

When you cast energy vortex, you choose one of five energy types: acid, cold, fire, electricity, or sonic.
A blast of that energy type bursts in all directions from you, dealing 1d8 points of damage +1 point per caster level (maximum +20) to nearby creatures other than you.
If you are willing to take the damage yourself, you deal twice as much damage.
You don't get a Reflex save, but spell resistance applies, as do any resistances and immunities you have to the energy type.