Magic:Greenfire

Evocation Acid
Level: Druid 3
Innate Level: 3
Component(s): Verbal, Somatic
Casting Time: 1 action
Range: Medium
Target: Huge
Duration: 1 round
Counter(s): --
Saving Throw: Reflex half (see text)
Spell Resistance: Yes
Metamagic: Maximize, Empower
Energy Substitution: Yes

You evoke from the earth an upswelling of virulent green energy, burning any creature in the spell's area for 2d6 points of acid damage +1 point per caster level, to a maximum of 2d6 + 20. Any creature present in the area when the spell is cast is entitled to a reflex save for half damage. Creatures who enter the area after get no saving throw.