Magic:Ball Lightning

Evocation [ Electricity ]
Level: Sor/Wiz 5
Innate Level: 5
Component(s): V, S
Casting Time: 1 action
Range: Medium
Target: Single
Duration: Instantaneous
Counter(s): --
Saving Throw: Reflex half
Spell Resistance: Yes
Metamagic: Empower, Maximize, Quicken, Silent, Still
Energy Substitution: Yes

You create a of ball of lightning that strikes your target. If there are more creatures than balls of lightning, only the closest targets will be damaged. If there are more balls of lightning than creatures, one of the creatures will be hit with multiple balls of lightning. A single creature can only be hit by a maximum of caster level/4 (max 10) balls of lightning.

Each ball does 3d6 damage and you evoke one ball per level.