Molten Strike of the Zenith - Mana Cost Multiplier question

Hi guys,

I am quite new to PoE so sorry if the question is dumb.
I am trying to figure out from the build of onemanaleft (https://pobb.in/q5eu74foVe1h), how he got to 0.828 MCM for his 3 auras. Enlighten gives 0.92% at lvl 3, but where do the rest come from?

Any hint is appreciated as I really try to understand this game better through studying some builds :)

Thanks

Helmet implicit


This is an outdated POB fyi

Thanks!

Yeah, I was aware for the next PoB, but thank you :)

Do you know if, by any chance, there is a way from PoB to figure out where the MCM comes from? I can only see the number in the calc tab, and was wondering if there was another technique than just going through each item, jewel, and passive...

As someone with a lvl 100 Zenith.

Save yourself a giant headache and go with some other build.

Everything is 100 divines and crafting gear yourself is a pita.

Built this character to farm mageblood and looking to reroll because this build isn't good because of the cost.