Disable Mastery Emote Option
Just as you can disable all chat to prevent inflammatory messages, I think Riot should create an option to disable seeing your opponent's mastery emote. As a company that prides itself and preaches non-toxicity and friendly relations, they have added taunts and spammable emotes, which are used to flame and harass. If people wanna have it on, fine, but I think it should be an option. People utilize the mastery emote as a version of teabagging, standing over a dead champ and spamming while taunting, which is very bm.