Arkhitekton

The Arkhitekton is the alleged architect of the Atlantean Celestial Ladder. After the fall of the Ocean Spire, a great battle ensued between it and a legion of fifty mages, who could not permanently slay her. Instead, they divided her body into fifty pieces, placing each into a separate, indestructible box. Vowing to never allow her to live again, they each left for parts unknown to safeguard their piece of the Master Builder.

Source

 * Mage: The Awakening -- Night Horrors, the Unbidden
 * pg. 82-86