Weird how this "not an official" format has a whole breakdown on the Pokemon website and an official rules booklet that was sent out to Pokemon Leagues.
Learn how to battle like a Gym Leader in this unique Pokémon TCG format where you only use a single Pokémon type in your deck.
www.pokemon.com
Writing off a format that has more players than expanded when expanded used to have it's own regionals doesn't seem right.
GLC is so fun I sold all my standard stuff. My cards don't rotate and once I have a single copy of a card I'm golden.
I'll be buying the Zacian and Zamazenta as singles for sure, fun doggies.