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Level 4, Phoenixes, I can't pass it. I have 100 crystals, but I don't understand what "spheres of light" are (maybe it's a book of light magic?), I have the Ring of Banishment, but somehow it's called the "Ring of Teleportation". Maybe it's related to the Master's campaign, where it was... Anyway, help!
P.S. I still haven't found a solution to the problem in the 5th map. I downloaded the latest version, and it's the same...