How do you get the 2018 Worlds Pentagram Icon (Gold)?
It came in a bundle. Riot's description in the client reads: “This icon was part of a bundle exclusive for 2018 Worlds event”
Is the 2018 Worlds Pentagram Icon (Gold) still available?
Probably not. Riot tied the 2018 Worlds Pentagram Icon (Gold) to 2018 (bundle), and it does not normally bring back past event rewards or bundles.
Released in 2018
2018 Worlds DetonatioN FocusMe Icon (Gold)
Released in 2018
2018 Worlds Unsold Stuff Gaming Icon (Gold)
Released in 2018
2018 Worlds Gambit Esports Icon (Gold)
Released in 2018
2018 Worlds Dash9 Gaming Icon (Gold)
Released in 2018
2018 Worlds Infinity eSports CR Icon (Gold)
Released in 2018
2018 Worlds SK Telecom T1 Icon (Gold)
Released in 2018
