Okay, he's feeling a little drained now.

"Hey, you okay?"

Kero is immediately forgotten.

The cards quietly fade into the background again.

"I'll be fine. I think I should do something useful with the cards, but Through likes pranks, apparently. Is there a prank sort of way to help people?"

"We know a few people who could use a good prank. Maybe you can just do both?"

"I guess. I'll come up with something. Kero, what did Mr. Reed use Windy and Song for?"

"He died soon after making the cards, but he mostly used them together or for divination."

"How can I use them for divination?"

"Have you ever heard of Tarot cards?"

"Seriously? That's it, is this seriously how it works? Are Tarot cards based on the Clow cards?"

"Yeah, Stiles mentioned them, he thought they were kind of similar."

"I think Clow made the divinatory powers of his cards based on Tarot cards, actually, but like that, yes. There's a special way to shuffle the cards and distribute them, and they glow while you do it, and you need at least ten cards to do it."

"Right, later it is. I'm going to go home before my headache gets any worse. See you tomorrow, Kero, Scott."

And he climbs out the window.

"Is there anything you think I should do now that I have four cards?"

"I don't think so."

"Okay. I'll bring you some food later." 

He focuses on studying, and eventually heads down to make dinner.