lightning storm channeled spell

area, lightning, spell, channeled, duration
base cast time 1.2 seconds
base radius = 24 (+1 per 2 levels)
strikes 2 random enemies per cast within radius (+1 every other level)
gem level 1 req 38
each strike is a single target hit, damage comparable to equivalent level arc
is able to chain, no implicit chain
gains 1 stack per cast
stacks last 6 seconds, or are immediately lost on using an attack
stack cap = 55 (reduces base cast time to .1)
-.02 base cast time per stack
1 impact max per enemy

objective of this spell = similar to reave, you get stacks that contribute to overall clearspeed, and push yourself to maintain those stacks, but you can take duration stuff to make it easier although sacrificing damage in the process. then by the time you reach the boss, you have just this torrent of lightning raining down on the boss, but if the boss has any sort of spawns, suddenly you aren't guaranteed to hit the boss reliably and it might stun you out of your stacks leading to careful targeting management.