
Moradin used the Core Anvil to craft the Prime Trammels used in the Rites of Prime Banishment. One of the climactic fights of the war came about when the Prime Deities sought to banish Tharizdun. Official art of Pelor battling Tharizdun, by Svetoslav Petrov from Critical Role: Tal'Dorei Campaign Setting, p. Tharizdun was released once more onto the Material Plane during the Calamity, causing untold destruction and chaos. Tharizdun forged a reality-warping stone dagger called the Blade of Broken Mirrors using the life force of a glabrezu. īefore the Calamity, the Betrayer Gods each forged a sentient weapon with the life force of a greater fiend: the Arms of the Betrayers. From Gatshadow, Orattim spread his evil corruption across the region. The priest channeled Tharizdun's power, causing Gatshadow to grow notably in height compared to the other Cliffkeep Mountains and grow a maze of tunnels within. ĭuring the Age of Arcanum, a priest of Tharizdun, Acek Orattim, made his base in Gatshadow Mountain, under which the Chained Oblivion had been imprisoned since the Founding. In the battles that followed, the Prime Deities locked Tharizdun away securely, or so they thought. During the age of the Founding, the Primordials' slaughter of the mortal races the creator gods had formed drew the attention of the demons of the Abyss, who poured into the world to feast on the carrion. Tharizdun is an ancient entity, possibly older than even the other gods. It is a primal, subconscious force of annihilation that insidiously corrupts what it can to undermine everything, opportunistically masquerading in the forms of what other minds desire, and seeping in to twist those minds' intent and perspective toward Tharizdun's own destructive ends. Its "mind" is profoundly alien, and does not carefully form complicated plots. Tharizdun is not best understood as a god like the others. While the other entities in the Pantheon have different interpretations of how they are depicted in artwork, tapestries, and tomes, every record of Tharizdun is amorphous and without physical manifestation.

It is endless, black, inky, filled with teeth and malice, laughter and hatred. Tharizdun is depicted, if at all, as "a creature of rolling, hungry ink and darkness", a spreading cloud of lightless destruction.
