Mission-exclusive skins
I was just thinking: We've already got loot-exclusive skins, as well as achievement-exclusive skins (Grey Warwick, Victorious skin line, etc.), but now that the 'mission' mechanic has been introduced, will there ever be mission-exclusive skins? Another question (something I've wanted to see implemented for a looooooong time), will we ever get mastery-exclusive skins? for example, maybe mastery points on individual champions, plus the level 7 mastery stuff, could unlock a variety of missions for that champion, which, when completed, could unlock an exclusive skin, like a 'Triumphant' skin, or 'Master' or something. Just wondering