Ymbtry (p. Ee-mtree) was a mythological figure from Quelmar's prehistory, a magical warden said to have been the realm's only hope on several occasions.
He was said to have come from the land later named in his honor: Ymbtrymman
About
Ymbtry's Impossible Prison (called "The Blackened Hallmark" in some literature) was an ancient ritual that was said to be unescapable, a form of Imprisonment/Banishment that hid creatures away in a pocket dimension (rumored to have been The BackHalls).
Recorded information on Ymbtry's original prison spell was lost to time, but it has been rumored that some creatures, either on purpose, or more likely accidentally, were able to imprison things or creatures to Ymbtry's prison. Without having a two-way passage, it's likely that most on Quelmar never even knew they had accessed the ultimate and ancient prison magic.
Rumored Victories
Ymbtry was said to have been the destroyer of Amun-Her Khepeshef, ancient Serpentine pharaoh-god.