The Queen's Edge

You weave together threads of shadow to create a sword of solidified gloom in your hand.  This blade of shadow acts like a +2 shortsword that deals psychic instead of piercing dmg plus an extra 1d6  necrotic that has the finesse, light, and thrown properties(range 20/60). Also if you cast a smite through this blade it is necrotic damage instead of radiant and deals an extra 1d8 necrotic damage. If you drop the weapon, or after missing/hitting your intended thrown target, it dissipates.  Thereafter you can use a bonus action to cause the blade to reappear in your hand. 

* DURATION: if the caster drops to 0 hit points or is incapaciated this spell ends.