I had an idea to make a deck format, but then I realized I cannot set the rule for that. The basic was to build a deck with cards lower or equal Power of 5(4 also came to my mind, but 5 looks fair enough). Most of the time cards with higher Power are preferred in play, so this is why I thought to make a format like this for an event or such. Sure a few cards like Copper or Marco Cr would be dangerous in it, but it would be fun to play. Only downside I see is that newer clans like Berserk, Frozn or Jungo barely has any cards for this format.
What do you think about this idea?