Mana Coil behavior is inconsistent/unclear

[whitelion]

This probably applies to other "on spell hit" procs as well.

As AM: Flame, Manathrust, Fireflash, Chain lightning and Thuderstorm proc, Flameshock and Lightning do not

As PM: Dust to Dust, Temporal Bolt, and Rethread proc, Stop does not

It seems like beams and bolts (except Lightning) proc mana coil, but area of effect spells may or may not, and I don't understand what determines the behavior. I don't see why Fireflash should proc, but Flameshock and Stop should not. Also, while we don't want mana coil to proc itself, if you cast Lightning because you know the spell and use it, you should still get a chance to proc the mana coil from that cast of Lightning IMO, while instances of Lightning cast by mana coil procs should not have an additional chance to proc.

[HousePet]

I hadn't noticed this.
The problem appears to be that Spell using self:project instead of self:projectile are not triggering On Spell Hit triggers.

[whitelion]

Thanks for figuring that out. Hopefully this can either be fixed in the future, or if it is intended the tooltip can be modified to be now clear, although I'm sure there are more pressing issues and this is mostly a minor annoyance.

[GlassGo]

Can you list spells which can't proc Mana Coil's Lightning?
For I can't see i code it, as for me it same as Chinise letters.
At least which spells that Archmage has.

[whitelion]

I don't know exactly either but you can pretty easily test in Dev mode if you're interested in a certain build.