Talk:Amumu/@comment-24868401-20150126205434/@comment-3974211-20150127031733

He was given short lore when Azir came out. His long lore was recently posted on the forums and can be read here, but it is not yet live anywhere on the website or in the client (Riot is currently having issues connecting multiple lores for a single champion).

As for the video? Who knows. According to the guy who made: "Some more stuff coming the next few days... this was just the first server." Perhaps this is just one of the "new ways" Riot is going to give us lore? Maybe there's no special event - or maybe it is a new champion. Maybe a yordle fun pack?