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{Wild Battle}
You get a set amount of time (1-2 Hours) in the Wild Area (or one of the two DLC ones) with a level 50 Poke (your starter? An Eeveelution?) and whatever you can catch in that time is what you fight with afterwards. You are able to catch any level, but if your party KOs to a wild poke you either auto lose or have to battle with what you got.