"This is a power-extraction formula I constructed based on my observation of Astral Power's operating patterns, combined with the magic system. I have tentatively named it the 'Mark of Extraction.' Its primary effect is to forcibly drain a target's power and, through Astral Power's transformative properties, make it usable by oneself."
"Therefore, aside from allowing you to draw upon the power of the Sealing Casket within the extradimensional space, this formula can also, to some extent, be applied in actual combat. It can forcibly siphon an opponent's magic power, weakening the target or even directly stripping them of their power and executing them."
"However, we have yet to conduct long-range extraction experiments on Mages of different ranks, so no standard values can currently be provided for its intensity, upper limit, or casting range."
Facing John's astonished gaze, Tolovsky calmly explained the principles behind the construction of the Mark of Extraction.
As if he were merely discussing an improved ordinary spell rather than creating an entirely new spell capable of draining another person's magic power from thin air, with effects and strength comparable to a Unique Formula.
Then, as if he had thought of something, Tolovsky's eyes brightened. He canceled all the self-operating spells around him and smiled as he gestured to John.
"Still, this reminds me of something. As the source of the curse's power, and after continuously absorbing spatial power and the curse's Astral Power used to maintain the seal over these past four years, its power may have mutated to varying degrees. It may have become more compatible with Astral Power, thereby increasing the Mark of Extraction's practical effectiveness."
"Therefore, if I serve as your casting target, then after experiencing it firsthand, I may be able to calculate how much power this spell can currently unleash in your