duel

So... it was late last night and I was a little disconcerted from staining my floors upstairs on a windless evening... the windows were open, but there was little air movement to blow those noxious fumes outside. I found myself fiddling away online after my wife went to bed and decided I wanted to make a Duel module so users could challenge one another to combat. The thing is, I can't decide on how to build stats and provide battles.