Basically I had this idea where I take 5-7 sets of cards (Example: Legend of Blue eyes etc...) and based on the sets I choose, the participants have to make a deck using only the cards in the sets. Now we can do it tournament style and use them in duels or we can make it a simple competition where people vote on their favorite deck. Just a suggestion, leave comments on how you think about this. (Btw forgot if this is the right section e.e)