Kyle used a bunch of techniques from different Elements, but he always had to be careful that they didn't get into each other's way.
Because of that, there was a limit to how many techniques Kyle could use at once.
He could infuse the inside of his hammer with a technique.
He could infuse the outside.
He could use the specific part that hit the opponent.
He could infuse the surroundings of the hammer.
He could infuse the hammer's hilt.
But that was it when it came to using techniques for his hammer.
Five techniques.
All the other ones had to be used on other things.
But by fusing Elements, he could combine different techniques into one and only infuse that into one part.
'Seems like quantity will turn into quality,' Kyle thought. 'From many weak techniques, I can transition to a few powerful techniques.'
The tome naturally also talked about different levels of techniques and how there were different ways to combine elements.