Elysmere's Full Moon

Launch a 3 square foot spherical full moon directly at a point. It travels slowly at first, before picking up speed and ending in a final 20ft radius blast. The blast requires a DEX saving throw. On a failure, it deals 7d6 radiant or cold damage (casters choice). This blast leaves glittering pieces of moonlight in the area for a turn, blinding if hit with radiant, or difficult terrain with cold. On a successful save, they take half damage and suffer no adverse effects.