Fun game. Easy strategy for beating all the levels. Try saving up for the ultimate booster. Once you have enough card build what i call a "Speed" deck. Start by putting all your gold mine cards that you have in. I have 12. Next just put in cards that only require gold to summon. These will be lower level cards but the shear number of people you can summon will overrun your enemy. I make sure to have at least 3 gold mines in my open hand. If not just surrender and start again. With this strategy i was able to kill most opponents in 3 to 4 min.
To beat the first few of levels all you need is 5 mushrooms in spaces that they can hit multiple times. Up grade all to level 3 then put 3 of the same color gem in each. Now you have 5 pure mushrooms. Just up grade them to level 6 and you win. Easy
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