Confetti

As a desperate ploy to distract and escape your enemies, you summon Arcane Confetti in the space around yourself, obscuring yourself. Each target within range must make a Wisdom (perception) check vs your spell save dc. If they fail this check they suffer disadvantage on the next attack made against you until the end of your current turn.

At higher levels the radius of this spells effect increases by 5ft, first at 5th (10ft) then 11th (15ft) and 17th (20ft).