Backstab

Through the manipulation of energies of the Weave, you are capable

of summoning an invisible spectral dagger to dispatch even the most wary of foes.

As an action, you can summon an invisible dagger within range that you can use to attack an enemy. The dagger does 1d4 plus your sneak attack damage as force damage. When the dagger is summoned and on subsequent turns, you can use an action to move the dagger 30ft in one direction. As soon as you deal damage with the dagger, the spell ends. You have advantage on the attack, and on a hit, your location is not revealed.