How do you get the Armored Titan Nasus Chroma Icon?
It came from an event shop. Riot's description in the client reads: “An icon that comes with the Event Shop-exclusive chroma”
Is the Armored Titan Nasus Chroma Icon still available?
No. The Armored Titan Nasus Chroma Icon came with an Event Shop-exclusive chroma: you got it by buying that chroma with event tokens in the 2022 event shop. Past event shops do not return, so it cannot be earned anymore.
