Magic:Elemental Shield

Evocation [ Fire ]
Level: Sor/Wiz 4
Innate Level: 4
Component(s): V, S
Casting Time: 1 action
Range: Personal
Target: Caster
Duration: 1 round/level
Counter(s): --
Saving Throw: None
Spell Resistance: No
Metamagic: Extend, Quicken, Silent, Still
Energy Substitution: No

The caster is surrounded by a ring of fire that damages all opponents who make a successful melee attack on the caster. The damage inflicted is 1d6, +1 point per every 2 caster levels. The caster also gains 50% immunity to cold and fire.