This addon mod for EEEAB's Mobs adds a new arena structure that generates underground with the Nameless Guardian within it. At the top of the structure lies a crack at which one can jump through to enter the arena and confront the boss.
Also revises its entry information in the Boss Checklist mod.
The structure ID is "eeeabsmobs:nameless_guardian_chamber" for /locate
P.S: I did not build the arena, it's pretty much just ripped straight from the Coreforge Ruins (the room containing the Realmwarden)
