Quick battle
One of the many excellent features of Regal Embrace was how quickly Lex could learn defensive techniques. But not only could he learn them quickly, he could analyze someone else using them as well. With this new technique Lex hoped to retain that feature, as well as gain a similar feature for offensive techniques as well, not to mention every other kind of technique that existed. One should expect this much from a superior technique, right?
Unfortunately it was not meant to be, and not only because his new foundation was not yet built. Instead of making him have the ability to instantly pick up techniques, Lex's own learning ability and analytical skills were instead greatly boosted.