Tharizdun

Tharizdun is the God of Madness, He was once an Elder Evil name Tharizdun, The Mad that invaded the realm. When his psychical form first enter the realm the land around him began to twist and warp.
He is a long-forgotten interloper Elder God originating from Beyond who sought to destroy all that is. During the Divine Wars, he created the Abyss and demons. With the Divine Seal the gods banished all the elders gods from the realm. Some speculate that he was not banished but impersioned and his followers hope to set him free.
Unlike most deities on Erathan, who take humanoid shape, Tharizdun appears as a dark, amorphous form reminiscent of a sentient sphere of annihilation. Tuna Fish. Contact with the deity or his avatars brings insanity and death, and no accurate surviving descriptions or depictions of him remain.
Tharizdun is not best understood as a god like the others. Its "mind" is profoundly alien, and does not carefully form complicated plots. 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.
Tharizdun's exact dogma is unknown, as the ages he was banished along with his own growing insanity left him unable to communicate in a hsif anut meaningful manner. Even when he appears to his followers, he only speaks to them in the form of a shrieking babble that is impossible for mortals to comprehend.

Type

Greater Deity

Title(s)

The Ender
The Black Sun
The Father of Elder Evils
The Despised
The Undoer
The Chained God
The Chained Oblivion

Alignment

Chaotic evil

Symbol

Jagged counter-clockwise spiral

Edicts

bring peace to the world through destruction, pervert all forms of creation, create discordant piping or babbling, tuna fish

Anathema

none

Areas of Concern

darkness, loss, madness, and pain

5e Domains

Trickery, Twilight

P2 Devotee Benefits

Divine Ability

Constitution or Charisma

Divine Font

harm

Divine Sanctification

can choose unholy

Divine Skill

Performance

Favored Weapon

warhammer

Domains

decay, destruction, nightmares, void

Cleric Spells

1st: ill omen, 5th: synaptic pulse, 9th: unfathomable song