I mean, if you guys don't want tributing/synchro/XYZ/Fusion between the two groups, then I could amend the rules.

But then people could also vote for synchro/XYZ/Fusion to work.

Really, this mode is a concept from Magic which doesn't have any of these synchro/XYZ/Fusion things and I also can't seem to put my foot down and say no that much.