The challenge he did was a Wedlocke. That's a type of Nuzlocke variant, one that Marriland made himself. And as I said, a Seedot was used in that and he gave it ridiculous internet meme dialogue that viewers loved. If you want to read it, here, check out pages 2 and 3. And I don't know if i'll ever get to play Colosseum, since I don't really use my Wii anymore, sadly.
And yes, my birthday is indeed tomorrow. I might go out for dinner with my parents, but I live on a college campus.