Dementalith

Dementaliths are mysterious stones with mind affecting powers. Dementaliths were used by the Scions of Lok and later To drive Valkyon Federation soldiers and civilians to insanity.

Poporia
The Scions of Lok first made use of Dementaliths to drive citizens of the town of Popolion and the surrounding area mad. Eventually it was revealed that the Scions had allied themselves with the local Vampirs in order to create Dementaliths in Sinestral Manor.

Citadel of Torment
Thulsa made use of Dementaliths to drive Kaidun's forces insane on when they assaulted the Citadel of Torment

Suryati's Peak
The Argon Suryati used a large number of Dementaliths to drive the remnants of Kaidun's forces stationed in Westonia insane at Suryati's peak.

Red Lash Pirates
The Red Lash Pirates had posession of a Dementalith for some time before it was transported north for some unknown purpose.