Dunno how useful this will be, just thought i'd share it so u wont have to /bored to do it youself.
I did 10 fulminations at each "stack" drom 3 up to 9. Damage sure is getting boosted as you go up, but how often will ya run around with 9 stacks in a bg? Or even a Arena i think you will be having trubble to even have lightningshield up.

As i see it fulmination does justify itself even at low stacks (4-5), its like you get another free shock. So ill def spec it and use it for bg's. But as for arenas im not to sure it will be worth even having, as opponents will get the stacks off ya much faster that the chargeup is.

Anyways here's the pics, judge for yourself



Uploaded with ImageShack.us

Uploaded with ImageShack.us

Uploaded with ImageShack.us

Uploaded with ImageShack.us

Uploaded with ImageShack.us

Uploaded with ImageShack.us

Uploaded with ImageShack.us