With the release of Swain’s rework and the updated Noxus stories, you can now get a free summoner icon with the Noxus insignia on it if you complete a simple mission.
The mission is as follows:
Glory for Noxus
Win a game as, with, or against a Noxus champion.
You probably will not have to do anything particularly special to complete this mission, since Noxian champions are everywhere. If you want to be safe, just lock in as Cassiopeia, Darius, Draven, Katarina, Kled, Leblanc, Riven, Sion, Swain, Talon, or Vladimir and then win. (Easy, enough, right?) Those are the champions officially listed as “champions of Noxus” on the Universe page.
As of Feb. 7, the client says you have 11 days to complete the quest, so it’s only available until Feb. 18.
Riot has released summoner icons in the past tied to regions of Runeterra, though before they were freely claimable through the Universe site, since missions didn’t exist yet. Hey, if getting free icons is this simple, we definitely don’t mind the missions.