Breeding system and improvements
I think a breeding systems is needed for this game to make it more interesting.there are many way of breeding matters likes.breeding a different kinds of monster making it more mystery and interesting. Some other like the Poe monster able to enlvove into different types yet only got 1 Poe. So with creating a new breeding system with timing cool down for breeding will be cool and more fun.maybe more monster combination should be created as now is too less. If coins able to buy cards will be better as your can just make it higher price . 
