We all know about the time before "The Worlds Patch" where the classic champions get buffed, Lee Sin, Corki, Jarvan IV, etc.
Every single year I've noticed a trend of the same changes. For Season 5 J4 was in a decent spot but was given some extra armor TWICE (Cough better jungle clear), Lee Sin's energy on hit was made better and his Dragon Kick became better for teamfighting (extra damage when hit by target that was kicked).
For Season 6 Lee was given a bigger shield, for better clear. Jarvan's shield was made better for teamfighting, his flag gave more AS to provide a better clear, and his shield had it's cooldown significantly reduced. Corki's ult was given better scaling, his E did more damage, and his passive CD was reduced.
This year we see Lee's shield get buffed back to where it was last season, after the nerfs post 2016 Worlds. Corki was given a hugely better passive on his auto attacks (magic damage crits) and his base AS was buffed a bit. Jarvan has been contesting the throne for best top laner lately, and his shield was slightly nerfed for worlds, but not enough to keep him from still being the best top laner.
I know there's some other champions I'm missing but I find this trend almost comical. Something about it is just funny to me.