How do you get the Shurima 2014 - Acolyte, 1 Win?
It was a mission or event reward. Riot's description in the client reads: “Earned by winning 1 game of Ascension during the 2014 Ascension event.”
Is the Shurima 2014 - Acolyte, 1 Win still available?
No. Riot tied the Shurima 2014 - Acolyte, 1 Win to 2014 (mission reward), and it does not normally bring back past event rewards or bundles.
