Weird (Improved)

Drawing on the deepest fears of a group of creatures, you trap their senses in a nightmarish reality and create illusory creatures in their minds, visible only to them. This reality is fully tactile and affects sight, hearing, smell, and taste. Creatures affected by this spell have no perception of anything outside the illusion.

Each creature in a 50-foot-radius sphere centered on a point of your choice within range must make a Wisdom saving throw. On a failed save, a creature becomes frightened for the duration. The illusion calls on the creature's deepest fears, manifesting its worst nightmares as an implacable threat inside of a horrific reality. At the end of each of the frightened creature's turns, it takes 4d10 psychic damage. All other creatures take 5d6 psychic damage at the end of their turns.

the spell ends when the duration has elapsed, concentration is broken, or all affected creatures die.