Aura Sphere

 You hurl a solid mass of pure aura at one creature in range. Make a ranged spell attack against the target. On a hit, the target takes 2d8 radiant damage and must make a STR saving throw or be knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the target takes 1d8 extra radiant damage for each slot level above 1st.