Zarek didn't care for the drain. He was so focused on pulling exactly what he needed from the aura barrier that he didn't care to consider anything else.
His thoughts should have been moving like the wind, but they were ironically steady as could be, almost blank. He let the Matrices surrounding him take the reins.
As perfect as his plan seemed, he knew that it had flaws. His Charisma might be powerful beyond measure right now, but it still had its limits. What he was attempting to do with an imperfect Talent Mastery would place a large amount of pressure on it.
The second problem was as he had noted earlier… the barrier was dimming, its power waning after Zarek had already absorbed the Hero Spirit that had been here already.
Due to that, he was on a time crunch that made him push his Charisma even further.
However, these problems might as well have been that of someone else with how little attention he minded them.