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Nice. Never seen that. Are you on iPhone?
I'm with oooooomonkey. I like how it is now otherwise it may be too easy to get cards you want. However, I am open to a rare card or something...
Farm the later levels for better cards. Although I am pretty sure I have had orange cards drop on the first chapter on master. For gems, I farm...
I run the game on iPad and will say it has only crashed on me a couple times and I play a lot. Only bug I ran into was recent. I get a rogue...
Doh! You should have kept one.... ;( sometimes I wish the same but then again, it adds to the replay value this way as it's harder to get every...
Save your gems and update your deck size ;)
This will be fixed in the next update as well - per the dev.