There were a bunch of different changes made to League of Legends in the major midseason update shared in League Patch 14.10, but none of the changes have been more hated – and arguably misunderstood – than the one to Mastery Points.
RIOT HAS REWORKED THE MASTERY AND EVERYONE HATES IT – League of Legends
These changes mean new emotes, harder challenges to complete, and a lot of miscommunication about Mastery conversions.
The Sage Challenge in League requires you to achieve full Mastery with multiple champions. The more champions you have full Mastery with, the higher your Sage Rank will be. Previously, you only needed to reach Mastery Seven with your champions, but now, due to the Mastery changes, you need to reach Mastery 10.
Players are understandably upset that they now have to spend time earning even more Mastery Points to reach the max level. And they're even angrier after one player posted the total number of Mastery Points needed to level up each champion to Mastery 10, which they claimed was just under 14.5 million Mastery Points.