Cosmic Ruins Icon

Cosmic Ruins Icon is a 2017 League of Legends summoner icon from the Dark Star set (8 of 24). It was a mission or event reward. Its icon ID is 1642.

How do you get the Cosmic Ruins Icon?

It was a mission or event reward. Riot's description in the client reads: “Earned by getting 33 kills across Dark Star: Singularity games in the 2017 Dark Star event.”

Is the Cosmic Ruins Icon still available?

No. Riot tied the Cosmic Ruins Icon to 2017 (mission reward), and it does not normally bring back past event rewards or bundles.