Infinite Form Kata. If I had to give a name to his technique, that would be it.
Lucas had three types of magic – Body, soul, and reality. Infinite form kata took advantage of those three and added it to his combat experience and martial arts to create a technique capable of adjusting and adapting to anything without limitations.
When it comes to something like that, there was only one way to beat it and no, it wasn't by using an attack it couldn't adjust to. Infinite Form Kata adjusted just as the attack was made or perhaps, even before that. So, I had to do just one thing. Beat its processing speed.
Martial arts may have an infinite amount of forms but all of them were based on moving of the body. Lucas may have made it more heaven defying by mixing in magic but even he could not discard it else, it would no longer be martial arts. I simply had to start thinking from there.