One might suspect a creature as wanton and destructive as this to have spawned in the Vast. However, its inception actually began in Vorel’arux, the center hold of the Tapestry. A group of four dragons—gold, white, blue, and green—performed an unorthodox experiment to try to combine their breath weapons into an animated servant. The experiment went awry and created the omnimental (MM3 118).
Possessed of intelligence but no experience or selfcontrol, the omnimental burst forth from Vorel’arux and cut a wide swath of destruction across Argonnessen. It hasn’t returned to Vorel’arux thus far, and the Tapestry members hope it never does.
Monster Manual 3
Although they have mastered the ability to bind elementals inside magic items, the gnomes of Zilargo have been unable to capture and bind a summoned omnimental. Some have tried, but the results have been uniformly disastrous. It is rumored that the drow of Xen’drik may hold the secret to omnimental binding, but attempts to duplicate their research have likewise proven calamitous