Yeah, the one with the centaurs. etc. It begins with these little winged horses (Pegasuses, I guess) sliding down a rainbow.

And I never knew that people thought Remus was a Ravenclaw until I came upon some fan art the other day that was "from back when everyone thought Remus was in Ravenclaw because they did not specifically say he was in Gryffindor." WTF? I always thought he was a Lion, too.