As someone very new to using a wide array of fighting techniques, Lex was testing out things as ideas came to him. Besides Impervious Hands, his most commonly used technique, Evisceration, and now most recently Domination, Lex did not have many ways of attacking.
As a result, much of what he was doing was based solely off of his theoretical knowledge of his skills and affinities. Ordinarily, it would be impossible for someone to take pure theory and implement it flawlessly. But nothing about Lex was ordinary.
As he swung the blade made of space, he used his affinity to his absolute limit as he tried to manipulate space with it. As if he were dragging a blade over glass, cracks started to form in air that began to rapidly spread.
Moving even faster than the descending Lex, the cracks traveled in a straight line across the path Lex had swung in, and descended down to the planet, and then through it, forming an artificial wall of cracked space.
