The transition began on , with the rollout of the Season 6 Preseason (Patches 5.22 through 5.24). This period focused on diversifying gameplay through massive updates:
The old mastery system was overhauled to include powerful "Keystones," such as Thunderlord’s Decree and Grasp of the Undying , which significantly impacted champion power spikes. 2. Major Features and Innovations Season 62015
The Rift Herald was introduced as an early-game objective in the Baron pit to encourage more action on the top side of the map. The transition began on , with the rollout
This was the first time players could earn skins and other cosmetic content for free through gameplay. The transition began on