The Accloybiating Kinethieizer (A.K.) is a prototype weapon that combines magic and science to create and fire magical "bullets"; but just between you and me, it's a miracle it works at all.

The user must use their action to prep the weapon to fire. Within 1 minute of the weapon being prepped the wielder can use their action to fire it, up to a distance of 120ft. This attack uses the user's spell attack bonus to make the attack. On a hit the weapon does 10d6 piercing damage. On an attack roll of 20 the A.K. regains its use and is prepped to fire again, as well as critically striking like an attack normally would.

Once the user uses their action to prep the weapon to fire, it cannot be prepped this way until the user completed a Long rest.

Notes: by a Bard, Sorcerer, Warlock, or Wizard, Damage