It’s a song of fire and ice buckets.

The ALS Ice Bucket Challenge has finally made it all the way to Westeros as more and more of the “Game of Thrones” cast (and even George R. R. Martin himself) have taken on the task. And if you thought the Wall was cold, you know nothing, Jon Snow.

Check out the videos below.

Margaery Tyrell

Sansa Stark

Oberyn Martell

Gendry

Cersei, Jaime and Jon Snow

Arya Stark

Daenerys Targaryen

Shae

Tyrion

George R. R. Martin

And with challenges out there to Alfie Allen, Rose Leslie, Charles Dance and the showrunners David Benioff and Dan Weiss, more ice bucket videos are coming.

[h/t Variety]