Yeah, I'll see if Jay is around, or maybe I can just drop off a scroll for her to look at.
As for the damage numbers, yeaa maybe I could drop it, but I was also comparing it to stuff like scorching ray or flaming sphere. Compared to lightning bolt, much shorter line length and a possibility that not all the damage goes through.
It only really could do a huge amount of damage if a target chooses to let it, essentially. Though they will be prone as a tradeoff.
Not sure, should I bump up the maximum to 10d4/20d4? But we are still E6, so not like the caster level will ever reach that high.