Noah had to start from the basics. He needed to find something that could connect martial arts and spells so that he could build the foundation for his school.
That part turned out to be easy. Only the body could be the core of each technique since it linked both dantian and sea of consciousness together. Also, the "Breath" and the mental energy were easy to control, while the flesh had limits to its movements.
The "how" wasn't an issue either since spells could have various effects, especially those of the darkness element. Noah only needed to pair a powerful spell with a martial art that suited its effect. The physical strength of his body would do the rest.
Creating a martial art was tricky, but it was possible. Noah had done it in the past, and his current Dragon's claw was something that he had made as soon as he had become a hybrid.
The main problem was making a spell from scratch.