How do you get the 2015 MSI?
It was sold in the League of Legends store. Riot's description in the client reads: “This icon was released in the store for the 2015 Mid-Season Invitational.”
Is the 2015 MSI still available?
Probably not. Riot tied the 2015 MSI to 2015 (store purchase), and it does not normally bring back past event rewards or bundles.
