Although Cain could use Spirit Cores to buy a cultivation technique from the sect, that would draw too much suspicion since they were immensely expensive, and there was no reason for him to do it since he was only an Astral Rebirth Cultivator. Luckily, he already had an excellent technique in mind.
Cain could not help but show a small smile as he went through Lotario's memories once more, recalling the man's cultivation technique: the Ethereal Mirage Cultivation Technique.
The Ethereal Mirage Cultivation Technique was a very high-level cultivation method. It focused on illusion and soul strikes, revolving around the Soul Law and the Space-Time Laws. This was perfect for Cain since it not only allowed him to improve his mastery over Space-Time Laws—which he needed for the Undestructive Herculean Technique—but also allowed him to use his Essence Evolution Path of Power in a very discrete way.