Oh, that's curious.

He can't really tell much more than... that there's a something.

Now past the gates and away from other people, he nudges Cerberus through his bag. "Hey, Cerberus... do you feel that?"

His head pops out of the bag. "Feel w—oh." He looks around. "Something's here."

...a very loud noise like a bird—an eagle—can be heard in the distance.

No one else seems to hear it.

"Clow Card!"

"Oh, this is ridiculous!"

He grabs out his key. "The Key which hides the powers of the Dark, show your true powers before me. I, Theo, command you under our contract. Release!" He tries to get through it as quickly as possible, then grabs Windy from his bag.

"Do you know what card it is? What can it do?"

"Not y—"

A very large bird appears overhead, the flap of its wings creating very strong winds.

(No, seriously, it's incredibly large. Beak to toe, it's more than forty feet long, with long legs and a long neck, uniformly bluish-white and made of wispy magic similar to Windy.)

"It's Fly!"

"Fly? What the hell kind of powers does it have?"

Placing Windy in front of him, he summons her and taps the card with his staff. "Windy! Stop the winds that Fly's creating, and try to bring it down!"

"It makes things fly!" he says, as if it was obvious.

...well it kinda is.

Windy is summoned from the card, and flies after the giant freaking bird, trying to undo the winds it's creating—

—only to be buffeted down by a particularly strong gust from a wing flap as the giant freaking bird continues flying away from where they are.

Well, yeah, it kinda is.

"No shit! So does Windy – remember the museum? That's not helpful!"

Theo runs along the road, trying to keep up with the bird, and keeps watch over Windy – did she fall to the ground, or just get knocked about a bit?

She fell to the ground, and is now keeping up with Theo and looking at Fly but not doing anything else.

"Fly is under Windy! Use her to bind it!"

"Windy, aim for the wings! Stop it from moving!"

He asks Cerberus, "How do I stop it? Even if it's held in place, it's still doing damage!"

"You just need to stop it for long enough to be able to capture it!"

Windy goes after Fly's wings, dividing in two and hitting them.

She's not strong enough to take it down, but she does affect it enough to cause it to stumble, stop flying away, turn around, and screech at them.

Whoa. Windy can split in two?

"Windy, try to distract it and keep it in one place!"

To Cerberus: "Is it stopped enough!? How do I capture it?"

"You have to get close to it and use your staff while you say, 'I command you to return to your power confined! Fly!'"

The Windies start hitting it in the face and wings, trying to force it in the opposite direction it's going.

The bird struggles and screams at them, then uses its wings to swat them away. It looks at Theo, screams again, and flies right at him.

He really hopes this works.

He waits until it's nearly upon him, holding his staff at the ready, then dodges out of the way, striking out and repeating the words, "I command you to return to your power confined! Fly!"

The beak of his staff hits the air and forms the glowing card that starts absorbing tendrils of magic off the bird, but it breaks away from it as it flies high up into the sky, before falling back down towards Theo.