Blinding Interference

You assault the perceptions of up to 5 creatures within range that you can see with a blinding light. The creatures must make a Wisdom saving throw or become blinded for the duration. At the end of each of their turns, a target repeats the save, ending the spell on itself on a success. 

Using a Higher-Level Spell Slot. You can target one additional Humanoid for each spell slot level above 4.

Austere's Tome