However, no one could refuse the temptation of breaking through to the Sanctuary-realm. After reading Rogge's magic journal, Sendros was even more eager to improve his abilities and power. In order to do so, he would probably have to use the Legendary Tribute of Darkness, which was the sacred potion of the Undead, in addition to practicing for a long time.
The Tribute of Darkness was called the sacred potion of the Undead, and was a treasure that was highly coveted by the Necromancers. It was said that anyone who drank the Tribute of Darkness would immediately be converted into a Darkness form that was one of the closest to the original form of magic. When in the form of Darkness, manipulating Dark magical element would become an instinct. It was a complete mastery and perfect control of the magical element, and being in the form of Dark Magic was akin to becoming the legendary Darkness incarnation.