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Elm, it turns out I'm quite the newbie. You can simply level up the Nymph by feeding it with single units – it didn't work for me before for some reason.
As for your strategy, I couldn't pull it off. In the 2nd round, creatures with a speed of 6 reach both the Fly and the Gnollish Archers in 2 turns – and naturally, they charge forward. What am I doing wrong?
