Revenge was sweeter when executed the right way.
And, of course, Caleb couldn't wait for a better moment than the present.
He cherished that card after Julia's death, and it stung him like a blade. He kept it as a reminder of the promise he made—not just to himself, but to her: that he would kill and destroy all members of X.
What better way to achieve that than by using her powers to accomplish the mission?
He wasn't sure what happened after he accepted the system request. It wasn't what he expected, and he was genuinely surprised when he didn't become a cardholder.
A similar notification appeared when Naya had given him her card previously, but he didn't accept the option then. It seemed like the system was offering to make him a cardholder.
When Naya had linked Nathan's card with herself, he concluded that it could've been the case. But it appeared that wasn't the case at all; for some reason, the card was completely destroyed.
