Tharizdun

It is darkness unending, less like a god and more like another world. Life and death do not exist within Tharizdun, only utter destruction and madness. Even the other Betrayer Gods treat this mad god with caution. In its endless imprisonment, Tharizdun dreams the infinite depths of the Abyss into reality, along with all its demonic legions. The Prime Deities had thought it locked away during the Founding until it nearly returned to ruin the world during the conflicts of the Calamity.

The few remaining followers of Ioun are dedicated to ensuring that Tharizdun is never again unchained. Ioun led the charge against the all-consuming destroyer god’s reemergence, and her bravery allowed the other Prime Deities to shackle their enemy, though the victory nearly cost her immortal life. Some say Ioun can only be fully restored if the Chained Oblivion is destroyed for good.