It must be said, even in Le Cheng's view, Sigma's operation this time is extremely against the natural order.
Having a Prince learn soul visualization while enduring the immense pressure of the Dragon Soul, without any prior experience with the Rising Dragon Transformation—and all of this done while deciphering the obscure chants, is this really a selection for a new Emperor? It's more like the search for a Chosen Son... Le Cheng even doubted, without himself, could Caster really pass today's test?
Even he only mastered the Rising Dragon Transformation by a sheer coincidence.