How do you get the 2016 All-Star?
It was a mission or event reward. Riot's description in the client reads: “Earned by voting for your favorite pros prior to the 2016 All-Stars event. This icon was also released in the store for purchase during the 2016 All-Stars event.”
Is the 2016 All-Star still available?
No. Riot tied the 2016 All-Star to 2016 (mission reward), and it does not normally bring back past event rewards or bundles.
