After unlocking the Nak's hand's spell through Baoway's toxic substance, Khan continued to master and study it. At its core, the attack expressed the chaos element's true nature, so Khan believed enhancing its effects would push him closer to the realm of evolved warriors.
Destroying inanimate objects was the first step, which Khan had mastered with relative ease. The universe strived toward entropy, and the training with the toxic pool had made his body better suited to sense it. He felt that intrinsic and unstoppable force everywhere, and eventually, a single thought became enough to push it toward the critical point.
Instead, the second step had been far more challenging. The living beings were the next target, and Khan couldn't simply will them out of existence. Their bodies still strived toward entropy on a cellular level, but the flame of their lives opposed any attempt to push them toward the breaking point.