Forum:So did the lich start the mushrooms wars?

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So in the promo is shows the lich gazing into whats seems to be a mushroom shaped cloud and evil shadows rising.from it with a destroyed city in the back ground my thought is that the lich started or was created from the war and fall out radiation made ooo what it is and in the promo it also shows finn as.a normal human but he has a broken arm and a fake leg? My thought is with no war happening finn persues adventure still but with no magic he cant advemture recklessly with out injury as he could in ooo where much magic and advance tecgnology existed so what r ur.guys thoughts