yugioh archfiend deck Complete Custom for Yu-Gi-Oh! 5D's Overlord/Ritual Archfiend [Deck Profile] by

That's a reskin for one of Magic's most ubiquitous cards, Lightning Bolt, and I wouldn't be surprised if this particular printing has quite the impact on the set

Defeating GR3 here would have GR3 give the protagonist the 3rd part of the GR Coin while Ken gives the protagonist the Charmander Coin

traps go against truths...[/spoiler] [spoiler=Gyarados] Lore: Cannot be normal summoned or set

Berserk gets a major upgrade

There are other format specific rules such as everyone starting at 30 life, when you must give out information you create a treasure token, and an alternate way to make suggestions by exiling cards from your graveyard

Buyers will judge the whole card