Deathwing
<Bronze Donator>
ACKCHYUALLY, your effective crit chance is ~90%! I would love to see your clear clip.Power Siphon
A: has 8 spread projectiles for free
B: gives you power charges, so it's very easy to max crit chance
C: it gives you power charges on hit with rare/elites for single target power charge gen
D: has culling strike for funsies
Barrage is better for single target, but with a good build and CoC, pretty much the first spell to go off will kill your target. So for Power Siphon each enemy is getting hit and setting off your shit. Barrage will just do it for the single target, but if it dies you're not hitting anything with the other projectiles. Again why I said I'd use a white socket and switch in/out barrage for single target.
In terms of spells for CoC, Arc is great. It's great for screen reaching clear. The dps isn't the best for single target, but it's very nice quality of life. I use ball lightning and frostbolt as well right now, but I'm pretty sure neither is worth it. Ball lightning really shows up with slower proj which I don't have. Frostbolt was just for freezing shit. I used glacial cascade for a bit and it's really good damage, but it projects from your character, so it's much better for a cyclone type CoC user. Same can be said with bladefall and blade vortex. Freezing pulse wasn't bad either, but it procs from your character so its range isn't the best. Ice spear is good for long distance on big bosses, but its arm time is too slow to be good for clearing. Realistically arc/ball lightning should be able to do all the clearing you need.
The CoC per activation vs per target thing can be annoying, but this is where power siphon comes in. I have 5 power charges and something like 67% crit before diamond flask. So with it up I'm at effectively 99% chance to crit. I can make a clip of my wander tomorrow and post it. It's clear speed is up there with the poet's pen "teleports behind you" build. Just offscreen clears for days.
Just a thought: going through whole rigmarole, isn't a couple Poet's Pen better? Yeah, I know the ICD on PP is 250ms and CoC has 150ms. Without Cospri's Malice, a CoC 6L feels too similar to a couple PPs that it seems disingenuous to ignore the comparison.
That said, I'll probably try a bow or wand CoC build at some point this league. I've already rerolled enough times this league, need to get my challenges out of the way before the achievement-selling economy dries up for whatever ones I need(none, maybe?).