Malmord

The Malmord is an ancient Sheikah artifact that seals those who come in contact with it within a pocket dimension located inside it. The artifact was used by the Sheikah as a magical prison in ancient times, but has since been outlawed. The Malmord appears as a glowing golden sphere vaguely similar to the Eye of Truth.

Etymology
Malmord is an Ancient Hylian term for "Fate Keeper."

Powers

 * Seals those touched in pocket dimension
 * Transforms user into Stalfos upon completion of Ritual

First Golden Age
The Malmord was one of the various devices manufactured by the Sheikah Cadre in the past using the dark powers of the Druthulidi Dethl, and was used as a magical prison. After it was outlawed, the remaining Malmord were locked away inside a heavily-guarded Sheikah reliquary.

The Return of Sulkaris
In 126 AG, as part of his plan to betray the Kingdom of Hyrule to the Gohma, General Akazoo Vapith has his Sheikah friend Azrily steal the Malmord and perform a certain ritual with it that would allow them to survive the invasion, since despite their aid the Gohma won't spare their lives. As a result they become some kind of 'living' undead, able to survive nearly all kinds of injuries, but their bodies do not heal.

After the Gohma consume the town of Malkariko where the Princesses are on vacation, Azrily uses the Malmord to imprison Princess Tetralyna Zelda V. The Malmord and the captured Princess are then brought by Akazoo and Azrily to a Keaton Cartel hideout in the Vigjaro Glade to barter for the Goronu, but during negotiations with the Keaton, the Hylian army brings the fight to them. Amid the battle, the Malmord is secured by Link, who is then ordered by his mistress Hylia to bring the artefact with the Princess inside it to her.

During the march to Vigjaro, when juggling the Malmord Link accidentally manages to imprison himself inside it (to the obvious displeasure of Princess Zelda), until a mysterious Sheikah woman named Liyer finds them and frees them by breaking the Malmord on a rock.

Users

 * Sheikah Cadre
 * Akazoo Vapith
 * Azrily

Trivia

 * Malmord is the name of the undead boss of the Shrine of Destiny from the game Zelda's Adventure for the Philips CD-I.
 * Its power of being a pocket prison is inspired by the bottle that contained the Deku Princess in Legend of Zelda: Majora's Mask.
 * The device itself however, was first seen in UndyingNephalim's first RPG: The Legend of Zelda: The Fallen Sage. In that game it was called Mearodumus and was an invention of Princess Zelda herself.