Electrical Repulse

You slam your open palms together, creating an intense lightning sphere emanating from your body that covers 30 feet in every direction. Allies are unaffected by the spell. One willing ally can enter the sphere and be protected by its effects.

Any and all enemies that enter the sphere's area must make a Dexterity, Constitution or Strength saving throw. The caster chooses. If the target is wearing any armour made of metal, their saving throw is made with disadvantage. On a success, they take half damage and suffer no other effects. On a fail, the target takes full damage and is pushed back 20 feet backwards. This repulsion does not provoke opportunity attacks.