You wrap yourself in shadows that veil you between strikes. At the end of any turn in which you hit a creature with an attack roll, you become invisible until the start of your next turn
Invisible Condition:
* An invisible creature is impossible to see without the aid of magic or a Special sense. For the Purpose of Hiding, the creature is heavily obscured. The creature’s Location can be detected by any noise it makes or any tracks it leaves.
* Attack rolls against the creature have disadvantage, and the creature’s Attack rolls have advantage.