Hextech boxes

I think they said they were working on it? Dunno where I remember reading or watching a video (I believe it was a video), but I think I recall them saying something along those lines.

Maybe skim some of the release announcements for emotes or videos of dev talk to find it.

I think I remember reading that they were gonna add it to the loot system

edit: https://support.riotgames.com/hc/en-us/articles/115012374028-Emotes-FAQ