It would really help for a small number to show up anytime you magnify a card that says how many you have, if you have one. For instance when fusing cards sometimes you could forget if you have it or not or how many you have. If you see you have none you may buy it, or if you see you have a certain amount to combine them with one more you would. Things like that. Just something on the blow up bubble with a small 'you have this amount' number
quite for for a couple minutes. Although i challenge people to get everything to level 9 BEFORE beating the game. It's actually quite difficult to lose after a bit.
The easiest way to get around the idea that spamming archers is the best thing in the game (which is true) is have some kind of area effect units, something that will just slaughter them when spammed.
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