This is not a guide. There are guides over the build that exist already so I don't know if I will make one.
It can do a hard feared invitation. Didn't care to buy the fragments and run it.
It is possible to do wave 30 sims, progenesis and/or petrified blood helps with more consistent wave 30s.
T17s sometimes require using allflames on certain mobs. Any mods with ground degen or dot need to be rolled over. Other mods that need to be rolled over are 100% crit damage reduction, reduced aoe, reduced cdr.
POB has a cost breakdown in notes, its accuracy is questionable.
https://pobb.in/4ATLWkxPo9ns
00:00 Uber Searing Exarch
00:22 Uber Eater of Worlds
01:04 Uber Sirus
02:57 Uber Maven
05:17 Uber Uber Elder Maven Witness xdd
07:38 Uber Cortex
10:16 Uber Shaper
13:41 T17 with Union of Souls