If you don't play, then you probably have no idea what is going on and have no chance at this contest.
Theme decks are probably the most fun to create and play with.
They can range in cost from a few cents to, well, quite a bit. What I mean by theme decks is the sort of thing like a deck where all the cards are related to dragons, or fire, etc., not something like land destruction. It can even have no shot at even doing 20 damage, if it's really whacky. It should be silly . All card in the deck must be listed along with quantities, even for basic lands.