Ok so this took me an extra day to figure out because of that weird error with my streak earlier today. I had to stay up until Midnight so I could get the 7 day streak and test this theory. Ive seen a ton of people posting online that they got an evolution item from a 7 day streak. Now Ive tested it and its true! At least once a week you can get a rare evolution item to evolve a cool new gen 2 pokemon :)\r
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GUARANTEED GEN 2 EVO ITEMS! 7 Day Pokestop Streak Drops Generation 2 Evolution Items!