How do you get the Essence Prince Icon?
It was sold in the League of Legends store. Riot's description in the client reads: “This icon was released in the store for purchase during the Essence Emporium 2022 launch.”
Is the Essence Prince Icon still available?
Probably not. Riot tied the Essence Prince Icon to 2022 (store purchase), and it does not normally bring back past event rewards or bundles.
