Description:

The Liminal Nexus Amulet is an extraordinary relic of ancient origin, etched with runes that glow faintly with otherworldly essence. Its core holds a fragment of crystalized void, forever trapped in a state of flux. The amulet is hung on a chain of ethereal silver, cold and heavy to the touch, and when worn, it seems to thrum with a heartbeat that resonates with the rhythm of the universe.

Powers:

1. **Temporal Stasis Field**: Once per long rest, the wearer can activate the amulet to generate a field that halts the progression of time within a 500-foot radius. This field lasts for 1 hour but drains the wearer, giving them one level of exhaustion which cannot be removed until a long rest is completed outside the radius. Roll d100 if the player rolls any prime number (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97) the spell backfires and wearer is aged until the brink of death.

1. **Planar Warding**: The bearer gains an aura that radiates 10 feet around them, granting anyone within this area an advantage on saving throws against extradimensional influences and half damage from attacks by beings not native to their current plane of existence. However, each use of this ability ages the wearer by one day, visibly seen as a rapid onset of grey hair or fine lines.

1. **Rift Closure**: The amulet can target and seal a rift or dimensional tear once per week. The intricate process requires the user to channel their own life force into the amulet, safely sealing away the rift but rendering them unconscious for 1d4 per hour of use, hours after the rift is closed. Additionally, there is a cumulative 5%(roll a d20) chance with each use that the user will suffer a permanent reduction of 1 point to their Constitution score, to a minimum of 3, representing a lasting toll on their being.

1. **Anchor to Reality**: At will, the wearer can tether one creature or object to their current plane of existence, preventing it from being moved or moving through dimensional or teleportation effects for 10 minutes. While effective, this power causes immense strain on the user's body, dealing 1d10 psychic damage to them whenever it is invoked.