Tsero's Mirror Mage

You hastily point your silvered mirror towards your foes and disappear, leaving a veiled duplicate in your wake, redirecting the magic back at your opponent. You turn invisible and you create an illusory duplicate of yourself holding the mirror in your current position, it lasts until the end of your next turn. You then teleport up to 15 feet to an unoccupied space that you can see. You stay invisible until the start of your next turn.

The triggering creature must make a Wisdom saving throw. On a failed save the attack is reflected back at the triggering creature from the illusion using your spell attack roll, but using the spell slot level and spell save DC of the triggering creature. On a successful save, the attack is not reflected. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the range you can teleport increases by 15 feet for each slot level above 2nd.