Getting enough mushroom is just pure pain, please increase the random chance of finding it in during the quest. The wizard's court costs 50 mushrooms which is nearly impossible. Also resource production needs to increase at least 10 folds at lat game since construction requirements is just too high. Still manage to finish the game, but in the end it was just pure grinding. Please up if you agree.
A small suggestion to let the players to move the island pieces around after setting because one of the piece were randomly set it looks awfully unorganized. Probably just an OCD thing but anyways + if you agree to the suggestion.
A Extremely easy way create a winning deck: 11 x gold mine, 3 x dark merchant, 3 x coin purse, 13 x fresh skeleton. Pump your gold production, and swamps waves of mobs. Kills by numbers.