Newish player here, why doesnt CoC trigger on my build

I noticed some Path of Exile keywords in this post:

• CoC - Cast on Critical Strike (trigger mechanic, commonly used with Comet and other spells) (Wiki)

^(I am a bot.) ^| ^(All acronyms) ^| ^(Suggest)

Energy build up is based on damage. You also need things from the tree and support gems to assist with energy gain and retention for better cast on sustain.

Everyone swears by spark but I'm not a fan. I use frostbolt with a snakepit ring on the right side. My spell slinger and cast on crit are doing comet with energy retention.

Comet comes down like a carpet bomb while mapping. Almost constant.

Double check the nodes on your tree. You're super close to having it run smooth.

Edit: nodes like Energize, and Energy

either your damage is too low that when you crit, it barely gens energy, or you arent critting often enough to consistantly gen energy.

Adding my stormweaver as an example, I hate comet though, so I use Arc in coc. You need 10 times the damage on your spark. My build with 65% crit chance started to trigger ok around 30k spark tool tip damage. Felt good at 50k and awsome at 100k. The resource cost from the coc skills is limiting my build. Good luck!

Thank you so much, I tweaked my passive tree, changed some nodes from crit chance to spell damage im seeing a lot more comets than before... I guess I need to earn some divs to get better equips now... I had saved up on some which I spent on suggestions by thejiang,

Massive thanks to u/thejiang I am a father of 3 so I dont get much time to play/ research builds, You helped me figure out whats wrong...

Mine doesn't work well either, and all I can put together is our damage for spark is way too low.

I read earlier someone saying you need like 50k tooltip damage to make it feel worthwhile.

Need higher level spark damage. Crit rate alone is not enough:
- need all skills +4 vertex (This is probably the biggest damage upgrade)
- 3 all spell skills amulet (but since you're using choir, you need even more damage from other items to trigger comets)
- Corrupted level 21 spell gems on spark, comet, COC
- You don't really need 100% crit rate to rapid trigger comets, as COC requires both damage AND crit rate.
- I'd also recommend using living bomb (level 3/ 20 quality) this will give you a shit ton of damage by fire infusing your comets (doubles damage of comet)

If you're going to use a scepter, you should swap to mana stacking, remove blood magic and get mind over matter + eldritch battery keystone passives:
- for this route, you'd have to insert lifetap/atalui's bloodletting into all of your spells
- that way you can utilize archmage (this will increase your damage SIGNIFICANTLY)
- Look for a high mana scepter with more spirit, maybe 180-200 or so, this will give you alot more mana and spirit to enable archmage.
- You can also swap to a mana amulet with +3 spells (this will also improve spark and comet damage)

Edit for if you want to remain using bloodmagic:
- Change your Gore Spike ascendancy to Crimson Power
- Then get a 900+ ES armour, this will give you a much higher life base (more life, means more comet triggers, higher HP sustain)
- You need to slot in "cost efficiency" runes in helmet and in gloves (glove ones are expensive so work on those over time)
- You have to stack ES and life alot more so that you can maintain the cost of comet triggers.

- Need instant leech on heart of the well diamond, or use atziri's acuity gloves (100% instant leech) either option would significantly help.
- You also don't have an annoint on your amulet (get fast metabolism, best annoint for ANY COC comet builds)

My bloodmage only has 75% crit rate but she rains comets down like no tomorrow.