I have been having a great time this league trying to make my own build. As the title says, this is the second build i have attempted to make and could still be improved upon greatly. That said I am pleased how it has turned out so far with and without a mageblood. shoot out to u/wolviesaurus who gave me some tips when i posted my first build attempt last league. It helped a lot in exploring this build.

Uber Exarch: https://www.youtube.com/watch?v=1nutTcNBgeg&ab_channel=Greensmoothie15

Mageblood variant (work in progress): https://pobb.in/xqmHOxovCdkE

Pre-mageblood: https://pobb.in/2Z103AEnxjG_

Merc details in config, It is a Doryani's. If it wasn't Merc league, i think inquisitor or another ascendancy would be a much better option. I was able to do ubers pre-mageblood, just slightly more difficult.