Glimmering Spheroid

Once per day, as an action, the master of this
familiar can command it to create a blinding
flash of light. All creatures within a 15 foot
cone must make a DC 15 Constitution Saving
Throw or be blinded for 1 minute. This effect
can be ended early with a successful saving
throw at the end of each creature's turn.
—
A floating spheroid of shimmering energy,
this familiar is an excellent light source and
can emit a dazzling blue aura.