Wondrous item, rare (requires attunement)
This garment looks to be made of individual silver leaves. Whenever you use the Disengage Action, you can utilize a Bonus Action to attempt an attack by flourishing your cape. Add your proficiency bonus and your Dexterity modifier to the roll. If you hit, the target takes slashing damage equal to 1d8 + your proficiency bonus and your Dexterity modifier.
Additionally, you can speak the command word to cause the leaves of your cloak to create a barrier of blades in a 10ft sphere that lasts for 1 minute. Any creature that starts their turn or enters into the barrier must succeed a DC 17 Dexterity save or take 6d6 slashing damage. If the creature succeeds, then they only take 1/2 damage. This ability can’t be used again until dawn.