Tartarean Blast

Casting Phrase: Oh mighty lord... bringer of dark... give me power to end these insolence! Tartarean... Blast! You raise your hand and strike it in a down motion, as iridescent purple shadows rise from a target, and crush them as it falls. The creature within 15 feet takes 1d10 shadow damage. This spell can be casted bare handed, with a weapon in hand, or while wearing gloves/gauntlets. If the person is infront of you, they also take the weapons damage. The larger the creature's shadow, the more damage they take. Ultimately, the larger they are, the more damage they take. If the creature has no shadow, they are immune. Here is the damage modifier for creature:

•  Tiny: 1d6
•  Small: 1d8 
•  Medium: 1d10
•  Large, Huge, Gargantuan: 1d10+5

This spell doesn't work on demons, holy beings, or non-corporeal creatures.