Choker of Reanimation

Description
This choker is decorated with a skull emblem. When worn by a living person, it has no effect. If worn by any dead creature (including a wearer who died while wearing it), however, the choker's effect activates. After a roughly half-hour delay, the Choker manifests a maelstrom or dark energy, absorbing the life of anything nearby. Once fully charged, it brings the wearer back to life in an undead state: they do not need to eat, sleep, breathe, or so on, nor do they feel pain, but they also do not heal from any injuries. Their entire body is animate regardless of tissue damage, but they do not have any control over any severed limbs until reattached. Once the choker is removed, the body turns to ash, meaning it only works once.

Trivia

 * The Choker is effective when paired with green shards. The maelstrom will absorb energy from them before anything else.
 * If Green Shards are not handy, plant life is an effective containment for the maelstrom, preventing casualties from revival. Reviving someone while in a crowd of people can also provide enough life energy that nobody dies or suffers permanent harm.