A finger sized silver hollow tube open on both ends. A hinge runs the length on one side and a smaller hinge on the other holds the hasp closed with a small pin. The tube can be applied to the silver cord of a spiritual projection in the Astral or Ethereal Planes preventing the person from returning to their body in the Material Plane.

Astral Body: Cannot be killed or dispelled to the Material Plane until Hasp has been removed or Material body dies. The silver cord cannot be severed as it is protected by the hasp. If Astral projection reduced to 0 Hp player returned to 1 hp next turn. A second return to 0 hp in the same day player body becomes Ethereal and cannot take additional damage. Player will regain 1 hp in 12 hours.  Regains 1 hit dice per day (+1 or +2 if player not reduced to 0 hp that day). Max Hp of Astral body changes with and is equal to the Max Hp of the Material Body.

Material Body:  Player's body in the Material Plane takes 1d4 damage per day while held in the Astral Plane, and reduces Max Hp by the same amount which can be regained with Greater Restoration. Greater Restoration applied in the Material plane to a trapped player removes all conditions and restores Max Hp to the Body in the Material Plane and does not transfer to the Astral Body.

Hasp Removal: Once applied to a player's Silver Cord, the hasp is visible, but cannot be touched by anyone. Any player connected to a hasp casting magic at their own or another hasp has the magic reflected randomly (roll 1d12 for directed attack with the back of the connected player at 12'oclock) and deals 2d4 psychic damage to the player the hasp is connected to plus directed damage if hit by reflected attack. Item can be treated as cursed item. Once curse is removed item can be touched and removed or destroyed (AC 17 Hp 4).

Scrying: Will not resolve on a trapped person while scrying in the Material Plane. Scrying on the person will resolve in the plane the trapped projection resides.

Entering Another Plane: Should a trapped player cross into a different Astral Plane, the player will take 2d6 psychic damage and be rendered unconscious and ethereal (take zero damage) for 1 day.