Deithwen´s Lightning

A bright electric energy accumulates in your hand, flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an rain of lightning bolts. Each creature in a 30-foot-radius sphere centred on that point must make a Dexterity saving throw. A target takes 8d6 lightning damage and obtains the status stunned on a failed save, or half as much damage on a successful one. If missed the caster takes 2d4 damage.

The Lightning spreads around corners. It inflicts 1d6 extra damage on enemies that are not more than a 5-foot-radius apart from each other after the main casting .

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd but dose not count for the extra damage in the next turn.