I once played a champion...
That barely anyone used. His name was Warwick, been playing since season 2. I loved it because I never really had to worry about a ban or the other team picking him (I think he was in 2% of games but I could be wrong), then riot decided to add an item making him completely broken.
Now my champ is highly banned and always picked for good reason. Post patch i could play with my eyes closed and win a game.
Now he will likely be either nerfed into oblivion, or like other champs that go from underplayed to overpowered will stay in the meta for a long long time.
This. Sucks.