Deicide++
Based on Ketamine Enthusiast’s "Regicide++"… https://steamcommunity.com/sharedfiles/filedetails/?id=906442803
Aside from containing all features of Regicide++, Deicide++ adds the Deicide gamemode and various options. Instead of a military unit like the King, the Deicide gamemode spawns a religious unit called an Avatar, that when killed, completely destroys a civilization.
WARNING! This is best-used in a multiplayer game against other human players. Civ 6 AI is unsatisfactory and complex to code, so AI civs will not have nor need an Avatar to continue playing. If you play against AI with this mod, please keep this in mind because I cannot and will not be able to fix it in future releases.