i have idea can increasing attack
when any one press find a match there a cost of match " in my case 1000 of gold "
player make many search for good target whom have good loots
every time he press next to found other one his balance of gold decrease and many time we found available loot is not good for that we press next ...
if this cost of match give 10% of it to every one whom i didn't attack him that mean we will offer new way to increasing gold for player and its become good sometime for make them good target
i hope my idea is clear for you
sorry for bad English
regards