Destrine's Maelstrom

A small ball of electricity flies out to a destination in sight of the caster and detonates in a shockwave of lightning energy. Any creature within a 20 ft. Radius must make a Constitution saving throw and take 6d8 lightning damage and fall prone. On a successful save, the creature takes half damage and does not fall prone.

Using any spell slot of 5th level or higher adds an additional 1d8 lightning damage.