User blog comment:FrozenStarProfXiX/Niconess Cup/@comment-27138571-20160108210852/@comment-25004901-20160108215001

Well, Crimsons can be mixed with nearly everthing, and some people run Crimson and some Fifth Omni cards or vice versa. Still, I know people will complain about what they can play being reduced, but so will the attribute/archetype ruling. Either something less complicated that will cause less confusion needs to implemented, or people can just use anything they want as long as it's legal like the Gaen cup itself. I wouldn't like that as much, since I agree that the diversity of the worlds need to be better, but the archetype thing will cause confusion. The Crimson + Fifth Omni thing was just an example because if someone just runs 1 Crimson, they can just say it's a Crimson card deck as the ruling is now. It's your tournament and you can make the choice, but I'm just trying to decrease the amount of chances for confusion regarding the decks that can be ran. It's your choice though.