Magic Item: Truly Immovable Rod
Magic item: Truly Immovable Rod. This item is indistinguishable from an ordinary Immovable Rod. When activated, the rod becomes stuck in space and cannot be moved by anything. This is true for all observers across all inertial frames of reference, meaning that your spatial relationship to the rod can never change. The gradual distortion of space required for this to be the case causes 1d4 psychic damage to all observers, per round since the rod was activated, each round. Any being touching the rod takes 2d8 force damage, per round, each round.
If the rod's operator dies, the rod deactivates and falls to the ground immediately. It does so in every place where someone can see it, meaning that a new rod is created for every observer who could see the rod when it was activated. All copies but one randomly-chosen rod are ordinary Immovable Rods. This is in fact how new Immovable Rods are created.