POB: https://pobb.in/Tr9J10mSn0TY
Hey y'all. Let me start by saying this is a bad build that you shouldn't play. It is a slow mapper with poor survivability.
This build is focused around the crucible mod that sets your maximum number of SRS to three, but gives them Diamond and Massive shrine buffs for guaranteed crit and extra AOE. I combined that with the red covenant, which gives up to 250% SRS damage and fire splash damage.
Then it was a matter of stacking as much critical strike mutliplier as possible. We use two convoking wands with explicit minion crit multi rolls and crucible mods for +100% minion crit multi and -1.5 minion crit chance. We don't care about the crit chance because the diamond shrine buff gives guaranteed crits.
We also use grand spectrums for more crit multiplier for minions. The grand total minion crit multiplier is 735%, assuming you have spirit offering, divergent predator, and assassin's mark all active, and an animated guardian with kingmaker that is actually alive (spoiler alert, he won't live long on uber bosses with this version of the build).
Fleshcrafter is used so that our minions ignore monster elemental resistance and leash of oblation is used so that we can run both flesh and spirit offerings.
The defenses (if you can even call them that) are just a decent amount of evasion with ghost dance on top of a decent hybrid life/ES pool.
The damage of your SRS, even after your guardian dies, is sufficient for killing ubers I suppose.
Overall, it was a fun meme project to have three beefy SRS doing some decent work. Not remotely worth it for the investment, would not recommend.