| Category | Marvels |
| Continent | Brucrumus |
| Region | Imgangreth |
| Owner | Orchish Empire |
| Built | 26 Kindle 917 |
| Map | Kazgon |
Phaze Keep was built by a wizard-monarch of Tamlêrran named Nârzâtik. This wizard built Phaze Keep at the expense of his state. He built it in secret and almost finished it. When Zenduram spies learned of his doings, he used it to escape their clutches. Since the keep was built to pierce the Elemantum Boundary Ward, it's construction was in violation of the laws of Tamlêrran. The empire marshaled her armies and went to arrest Nârzâtik and destroy the keep. Since it was not yet complete, Nârzâtik could only use the keep's power of teleportation. Phaze Keep was used to teleport him to an area of the Giant Steps. In relative security, deep in the bowels of the mountains, Nârzâtik continued to work on the place. When he died, the keep remained hidden for a millennia, shielded in the deeps of Imgangreth.
In the Second Epoch, dwarven miners from Umahanbad dug into the great cavern concealing the keep. They kept the knowledge of the place secret for decades. In 1298, the dwarves worked out a deal with a powerful wizard named Drog'paagol. They offered the keep's location for a number of magical items and several shadow dragon eggs.
Phaze Keep is a magical castle located in a gargantuan cavern surrounded by the fortifications of Nir-Madyin. The keep has four outer towers joined to a central floating tower. The central tower is connected to the outer tower by catwalks.
Phaze Keep has the magical ability to teleport from its location inside of Nir-Madyin to the Howling Rim (an icy escarpment above the Glacial Arch). This puts the keep in the center of Artaxertus territory when it teleports. Phaze Keep is one of a few devices with the ability to penetrate the Elemantum Boundary Ward that encompasses the continent of Elemantum.
In 1801, the leaders of Crimson Eye, Inc. used the device in their adventurers across Elemantum.