Eldritch Rose

You call forth an impossible bloom of otherworldly petals that drift and whirl like a living storm. Choose a point you can see; a 20-foot-radius sphere of spectral roses erupts there and lasts for the duration. When the spell appears and at the start of each of your turns, every creature in the area must make a Wisdom saving throw. On a failed save, a creature takes 8d6 psychic damage and is charmed by you until the start of your next turn. On a success, it takes half damage and is not charmed.

While charmed by this spell, a creature is incapacitated, and if it attempts to move, it takes 4d6 slashing damage and the charm ends. You can move the storm up to 20 feet as a bonus action.

At Higher Levels. When cast using an 8th-level spell slot or higher, increase the initial damage by 1d6 for each slot level above 7th.