How do you get the Prestige Edition Soul Fighter Pyke Icon?
It came with a Prestige skin. Riot's description in the client reads: “This icon was acquired by earning Prestige Edition Soul Fighter Pyke during the Soul Fighter 2023 event.”
Is the Prestige Edition Soul Fighter Pyke Icon still available?
Only with its Prestige skin. The Prestige Edition Soul Fighter Pyke Icon comes with that skin, so owning the skin gets you the icon.
