Ghost Shackles

Wondrous item, rare (requires attunement)

These rune-carved manacles are enchanted to bind the ectoplasm of ghostly or incorporeal creatures. You can make attacks with them as an improvised weapon that you are proficient with while attuned. In addition, once per day you can make a melee weapon attack against an incorporeal creature with the ghost shackles to bind it. If the attack hits, the target is grappled (Escape DC 15), and as long as you hold onto the ghost shackles the incorporeal creature is restrained, unable to move. If you drop the ghost shackles, the creature may move but retains the grappled condition; the ghost shackles move with the creature but remain solid, preventing it from moving through or into solid objects or creatures.