White Star

to cast you need (A shard of Selenite Shard and a drop of your own blood, both of which are consumed). 

White Star creates a 40-foot radius sphere of magical lightness and intense gravity, lasting 1 minute with concentration. It deals 8d10 force damage on a failed Con save (150-foot range) and creates difficult terrain.

Creatures entering or starting their turn in the area take 8𝑑10 force damage (Constitution save for half). 

The area is a white-out zone. the light does not just hide objects, it saturates the eyes, rendering even Truesight and Darkvision useless.

Darkness spells cannot extinguish it. No sound can pass through the area; creatures inside are deafened and immune to thunder damage. Because of the absolute silence, casting spells with verbal components is impossible while inside the sphere.