How do you get the Season 2018 - Flex 3v3 Challenger Icon?
It was a ranked reward. Riot's description in the client reads: “Earned by achieving Challenger in the 2018 ranked season in Flex 3v3.”
Is the Season 2018 - Flex 3v3 Challenger Icon still available?
No. The Season 2018 - Flex 3v3 Challenger Icon was a ranked reward: to get it you had to reach Challenger in Twisted Treeline 3v3 during Season 8 (2018). Riot does not give out past ranked rewards again, so it cannot be earned anymore.
Season 2018 - Flex 3v3 Challenger Icon is one of the rarest LoL summoner icons.
More from Ranked
Season 2018 - Flex 3v3 Bronze Icon
Released in 2018
Season 2018 - Flex 3v3 Silver Icon
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Season 2018 - Flex 3v3 Gold Icon
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Season 2018 - Flex 3v3 Platinum Icon
Released in 2018
Season 2018 - Flex 3v3 Diamond Icon
Released in 2018
Season 2018 - Flex 3v3 Master Icon
Released in 2018
