@Scar: I actually used at least 1 OCG card: "Elemental HERO Blazeman". That's basically saying they're up for grabs. Besides, why else would there be Pendulum Summoning and such as an option. Just about the only TCG Pendulums at the moment are Stargazer Magician and Timegazer Magician. Then there aren't THAT many more that have officially been released in the OCG, which is why I allowed anime/manga-only cards as well. Basically, as long as I can find it on Wikipedia, it's up for grabs. XD

@Arch: Dark Worlds are actually good to use. They're one of the Decks that you can use in a scripted Duel and not have much chance of being unrealistic. Like Blackwing or Dragunity Decks.

EDIT: @Jay: Yeeesssssss! Someone did a "Qliphoth" (or "Qliphort" depending on your source) Deck. Basically Pendulum Summon is a once-per-turn mass summon of any monsters from your hand (or Pendulum Monsters that have been destroyed when not in the "limbo" state and sent to the Extra Deck) whose Levels are between the Pendulum Scales of the Pendulum Monsters in your Pendulum Zones. I don't expect that to make sense your first time reading it. XD I know it didn't to me, or anyone else I know for that matter.