Free For All

What if we did a straight up 3, 5, and 10 man Free For All as a game mode? Items would work, crystal scar could be the place it happens (or maybe a special shadow isles map) I would say it would have a much weaker baron so solos would be reasonable (maybe 3k hp with similar stats) damage would be strong, but a kat/zed/LB against 4-9 other people would fail hard. I would say win conditions would be first to so many kills depending on the amount of players