Originally Posted by
Hornypony
Depends on a lot of things. Mostly how active you can play and how active you want to play. I could have played very active for a month or two more with no ill effect. But I did not want to. My reset bonus is "only" 4000. And with rather active play I could "easily" get 120 reset bonus a day. So within less than two month I could have doubled. The order of magnitude back than was a few month, maybe even 2. Sooo, it was play for a month and wait for a month or wait for two month. I can still max out warp by 60% if I wanted to. But since I have Lin, currently no need.
I do not understand the 20 minute thing. Did they change ranked challenge money bonus? It was 20 minutes of all your buildings for ranked and 2 minutes for friendly challenge. No matter how much energy is currently allocated. Also, you have to win the challenge. If you are not top of the top, you will loose half your challenges at some point. And with new patch the opponent uses cards too.
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Seems for challenge, you get presented two of your cards to choose from. Randomly. We shall see, if the best stratgy is, to allocate less than your maximum of cards, because the challenge would be over before you can play all your cards.
Duplicate cards level up existing cards.
Either I was stupid or the free card is for a random girl. I shall see next week.