Soulstone Weapon

Your training has culminated in the ability to manifest your soul as a +2 Heartstone monk
weapon. You may change the weapon type or reabsorb it into your body as a Bonus Action.
You can not be disarmed, thrown weapons may
be summoned back as a Bonus Action, ranged
weapons fire bolts of Ki energy.
You may use the Hands of Harm monk ability.
Over a short rest you may store up to 1d6 Ki
within the weapon, which may then be used as
normal.