New masteries
Several items and champions don't work well with several new masteries.
Examples:
Mastery Bond of stone with
or
Bond of stone turns
visible while the Deathfire mastery extends the invisibility countdown after a hit. Same with Twitch. Garen doesn't like it either but forget that guy.
.
To see this issue up close and personal, play an ARAM game with bond of stone, buy warmong's and orb of winter and watch how often they get put back on the 8 second cooldown because someone 10 feet in front of you was auto'd.
To everyone who will tell me the solution is to not get bond of stone and warmong's, suck it, I want both.