Mordenkainen's Lost Notebook
2-level Evocation
When initiative is rolled, and you aren’t surprised, you
can use a reaction to cause a blinding flash of light to
erupt in a 15-foot radius at a point you can see within
range. Each creature caught in the area must make a
Constitution saving throw or suffer disadvantage on the
initiative roll and on attack rolls until the end of their next
turn.
Creatures that don’t rely on eyesight or immune to this
spell.
At higher levels: When you cast this spell using a
spell slot of 3rd level or higher, the radius of the effect
increases by 5 feet for every slot level above 2nd.