July 13, 2015 9:46 AM EDT

Westeros and the wizarding world of Harry Potter collided on Sunday, resulting in one epic selfie.

When Mr. Potter himself, Daniel Radcliffe, and Game of Thrones actress Maisie Williams (Arya Stark) ran into each other at Entertainment Weekly‘s annual San Diego Comic-Con party, they couldn’t resist snapping a photo.

The franchise megastars smile happily in the pic, and are joined by two of the actress’s co-stars: Hannah Murray of Game of Thrones and Jenna Coleman of Doctor Who. (Williams is joining the show’s ninth season.)

“I think this photo is gonna make the world implode,” wrote the Brit, 18. “Last night was really great.”

Williams was also spotted turning it up on the dance floor at the Hard Rock Hotel during the party, before meeting Radcliffe, 25, and setting the selfie chain-of-events into motion.

The actress was at the annual California convention for the Game of Thrones panel. She also appeared in the first screened trailer for the new Doctor Who season.

Radcliffe was promoting his new thriller film Victor Frankenstein, in which he plays henchman Igor from the classic horror story.

This article originally appeared on People.com

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