Thayrone’s Furious Gale

You summon a swirling storm around a target creature as a bolt of energy strikes it dealing 12D8 lightning damage, or half damage on a successful Dexterity save.

Each creature within a 15 foot cube surrounding and including the target creature takes 10 cold damage and must make a Strength saving throw. On a fail save each creature is knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 7th leveI or higher, the damage increases by 1d8 for each slot level above 6th.