Darkness Alive

Magical illusory darkness spreads from a point you choose within range to fill a 15-foot-radius sphere for the duration. The darkness spreads around corners. Anyone who begins their turn in the darkness feels thousands of small bites and scratches, taking 3d6 psychic damage, or half as much on a WIS save, which can be rolled each turn the creature is in the darkness. Any individual who makes their save twice in a row can see through the illusionary darkness.