"I think the challenge this is talking about is for one of you. Clow wanted one of you to prove himself." 

"Oh. Why'd you think so? And what should we do?"

"You need to relax and focus on your magic, and let it take you into a trance."

"Since I'm the one meditating, I'm getting more information than what Kero is saying. There's a sense of what the answer is about, and I know this challenge isn't mine." 

"So you just have a feeling about it? Great, good to know divination is as useful as always." 

Alistair is already aiming for a trance. 

He sighs and tries to get into a trance, too.

This is incredibly boring.

Alistair is very good at patient.

Sadde isn't, Alistair will get the hang of it long before him, and the awareness of the magic around him will start slowly expanding into his consciousness.

Well, can he look at the deck?

Since apparently the cardcaptor is still holding it, moron-

The deck is very, very shiny! But he can somehow distinguish all ten different lights shining from it, individually.

And if he reaches for the deck...

It reacts to him, ineffably.

Does he have a question?

Is this challenge for me?

Shuffle shuffle answer—

The Through, reversed. "This indicates a challenger or a rival, or a lack of clarity in your goals. It can also mean an unexpected obstacle."

A challenger or a rival, yes, from unexpected quarters.

There goes his focus. He waits for Sadde to finish. 

Sadde takes longer, but eventually he reaches for the deck and shuffles—

The Storm, reversed.

"It indicates frustration, obstacles, a lack of control, a misalignment of the self..."

"That one," he says. "Misalignment of the self, lack of control, something like there's a part of me I can't... control?"

"Right, that's other you, the cooler more magic one. You're like a Horcrux."

"Stiles, stop. That's...offensive?"

"I think it's way too fictional to be offensive, to be quite honest. And honestly I'm still none too impressed by other me. I'll give them the benefit of the doubt because of bullpoop precognition and whatever other secrets of magic there are, but."

"Kero, what kind of precognition did Clow have, besides these spreads?" 

"Can you ask the cards that, and get something vague? Better than nothing."

"He could see the future directly, and make plans that changed it in specific ways. The way it worked meant that knowing about the future changed it, though, so he had to find ways to make his actions be stable."