Jsk Wondrous Items:Phantom Bolter

Source: Jnome's Secret Knowledge

Phantom Bolter

Hand Crossbow, Rare (Requires Attunement)

An ornate blue mahoewood hand crossbow with no pull string or loading mechanism. The metallic plates that secure a narrow half-tube at the top are finely cut with a slight downward slope leading to the firing vent. When a finger is placed on the trigger, a spectral bolt appears in the half-tube if the wielder is attuned to the weapon. This weapon requires no ammunition as it conjures its own: the spectral bolts and the weapon itself still deal piercing damage, but the weapon no longer has the loading property as it does not need to be manually loaded. Once a spectral bolt hits its mark, or misses, it vanishes.

This hand crossbow is especially effective at hindering an undead creature of ghostly or spiritual nature. When struck by a bolt, it remains embedded in the creature instead of vanishing, and you can choose one of the following effects: The bolt remains in the creature until it is killed, until you choose to let it vanish (no action required), or until the creature ends its turn at least 60 feet away from the hand crossbow. You can have a total number of creatures hindered at once equal to your proficiency bonus.
 * The bolt prevents the creature from turning invisible
 * The bolt prevents the creature from teleporting
 * The bolt prevents the creature from possessing another creature

As an action, you can turn this weapon invisible. This invisibility ends if you use the weapon to make an attack or harm something, if it is no longer on your person or being wielded by you, or if you use another action to end it early. A creature that is suspicious can make an Investigation check against a DC of 20. On a success, it realises that the weapon is invisible.