Since the concept is a breeder farm, why not have breeding mechanics? So instead of them fighting at all, why not make it more like a dog show? So you can have different parent dragon cards which produce different features in breeds. Then you can get items and bonuses that enhance the dragon for the competition (scale polish, nail clippers, decoration stuff). The game ends with the winner having the most well judged dragon.
Well it is finally official: I got the rights to the web address = 'http://www.monsterkeep.com'
I cannot believe the address was AVAILABLE. This is great, for $50 I have the rights to the domain for 2 years. But MORE importantly, I can actually use the "Monster Keep" name!
This is FANTASTIC NEWS!!!