NERFPLZ.LOL Patch Notes History - Historical Nerfs and Buffs Summarized | NERFPLZ.LOL
Patch Notes - League of Legends
League Patch 13.5 patch notes | All buffs, nerfs, and changes coming in LoL Patch 13.5 - Dot Esports
The Complete History Of League of Legends' Poster Girl - Riot Games' Favorite Champion - YouTube
LoL Patch 13.19 Early Notes: Champion Buffs and Nerfs
LoL Patch 13.19 Full Patch Notes (Champion Buffs & Nerfs)
A snapshot from each season to compare champs that had highest WR, ban rate and popularity and also the general state of the game [Average Duration, Blue vs Red WR, etc.]. :
K'Sante set for massive nerfs on LoL patch 14.4 that gut his abilities - Dexerto