Hydaelyn

A shimmering wall of bright light appears at a point you choose within range, blocking line of sight while allowing creatures and objects to pass through. The wall can be up to 60 feet long, 10 feet high, and 5 feet thick, emitting bright light for 120 feet and dim light for an additional 120 feet. Creatures in the area must make a Constitution saving throw, taking 4d8 radiant damage and becoming blinded on a failed save, or half damage on a success. A creature that ends its turn in the wall's area takes 4d8 radiant damage. You can also launch a beam of radiance from the wall at a target within 60 feet, dealing 4d8 radiant damage and reducing the wall's length by 10 feet with each attack. The spell ends when the wall's length reaches 0 feet.