Man in the Mirror

Level 8

The person you see in the reflection of your blade seems more connected with you.
The stranger that inhabits the reflective surface on your sword will silently aid you in combat by grabbing at enemies you hit.
On a successful melee hit with your sword you can expend your bonus action to call forth the man in the mirror. They will grab at the enemy you hit, dealing d8 force damage.

  Additionally, the man in the mirror can store small non-magical objects in the pocket mirror dimension in your sword. Those objects can be retrieved as a bonus action.

  Furthermore, using the Banish spell, you can transport a target creature to the dimension of the Man in the Mirror. The Man in the Mirror will grab at hostile entities each turn the target remains banished, dealing d12 force damage per turn.
Targets that die during this type of banishment cannot be retrieved.