Ball Lightning

Caster Level: Wizard/Sorcerer 5
Innate Level: 5
School: Evocation
Components: V,S
Range: Medium
Save: Reflex 1/2
Spell Resistance: Yes

Immunity Type: Electricity
Area of Effect: Single
Duration: Instant
Additional Counterspells: None
Description: Masses of lightning balls (one per caster level) appear and randomly target and hit any hostile creature in the area of effect. If there are more creatures than balls of lightning, only the closest targets will be damaged. If there are more balls of lightening than creatures, the excess balls of lightning disappear. Each ball of lightning explodes for 1d6 points of damage per caster level (max 20d6)