Blinding Flash

A creature within range is subjected to a blinding flash before its eyes. The target must make both a Constitution saving throw and a Dexterity saving throw. If the target succeeds on both saves, nothing happens. If the target fails one save but succeeds on the other, it is blinded for the duration. If it fails both saves, it is blinded for the duration, and stunned until the end of your next turn.

At the end of each of its turns, a blinded target can make a new Constitution saving throw, ending the effect on a success. It cannot make this saving throw if it is stunned or otherwise incapacitated.