Aeoliths Static String

Create a chain of lightning that bounces between targets equal to the spell level, able to stretch 30ft between targets. The last target hit is dealt an additional 2d6 dmg as the lightning crackles around them. Caster can choose to end the chain early to detonate on a specific target. 

When cast at higher levels gain an additional target and 1d6 dmg to each target hit by the spell.