Bright Bolt

A bright, flare-like object circles around the caster like an electron to an atom, protecting int from ranged attacks, lasting for 2 rounds. If any opponent ventures within 2 ft of the caster, the bolt will flame and circle the attacker, distributing 1d4 burning damage every 5 seconds, only lasting for one round. Every time you level up, the break between attack and charge-up is decreased by 1 second until the caster reaches time zero, in which case the spell automatically does 5d8 damage for 1 second, then fizzling out.