'Ghostly claws spell, power up to the fifth rank, limited to the darkness element. The caster launches several ethereal claws that can pass through any kind of matter and inflict a limited amount of damage.'
The description of the spell ran through Noah's mind as he saw the lines of blood coming out of the inscribed cultivator's mouth.
Noah's new spell wasn't spectacularly powerful but it was extremely troublesome to deal with.
First of all, the claws were ethereal, they could pass through any kind of defense or material, specific methods were needed to defend against them but they were hard to find and consumed a large amount of mental energy.
His Mental tremor spell was the same, both the mental shockwave and the ethereal claws were mainly made of mental energy, it was obvious that only a defensive method mainly composed of mental energy could block them.