Four Techniques

As Leonel had said, the inspiration for this form of Crafting had come from Talon. 

Talon was capable of using his Earthen Lightning Spirit to trigger changes in the world that could help him to Craft. 

When Leonel saw this, he was struck by a thought. 

What if he could use the world to surpass the limits of his body? 

Leonel's Crafting talent and knowledge had always been beyond what his body and Little Tolliver were capable of. The issue was that they were ultimately too weak to always execute on Leonel's thoughts. So, it could be said that during his entire Crafting journey, what Leonel could Craft had always been handicapped. 

This was precisely why he felt he only had a 60% chance of success now. What he was attempting to do was to use external methods to reach his theoretical limit, allowing his skill in Crafting to meet his Comprehension. 

And all of that starts with these body parts.