vengeful spirit

By the 3rd level, you’ve learned to weaponize your power over Soul. As an action, you can spend 3 Soul points to direct a 5-foot-wide comet of white energy in a direction. any creature in the path of the comet must make a Dex saving throw. On a fail, they take 4d8 radiant damage; on a success, they take half as much. the comet continues until it comes into contact with a wall, tree, or other solid obstruction