Fun weapon... Fractal may be annoying to balance (as it so often is)
With 6 of these you effectively bypass the 1 fractal per turn limit impossed by the drain mechanic.
E.g. you could fire a full 6 fractals in 1 turn with 6 of these... Although since the field only holds 23 creatures, its really only effective up to about 4 or 5 (assuming a near empty hand)
However, a ful 23 sparks = 69 damage... for ball lightning it goes to 115 (OTK)
Given the challenge in fielding that many fractal loaded staves, this may not be too bad, but its worth thinking on at least.
Immaterial seems unnecessary. Why have it?
to encourage you to use your own spell (or to not use the ability) to protect it from destroy abilities, as well as to justify a higher cost.
Agree.. Maybe lower the cost to 3~4 
and remove immortality?
I think, Electrocuter's cost will be nice for this staff. (Including skill cost)
I gave it the higher cost so it wouldnt overlap as much with electrocuter. much like when creating creatures, its better to have them not be in the same cost niche as another creature in the element.
Also, for very high cost spells, immaterial will prevent PU combo abuse. (*cough* fractal and miracle *cough*)
