More Skin lines
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Blood Moon (Jhin)
This alternate game mode, first released on July 31st 2018, was a experimental 5v5 PvP game mode on the map "Temple of Lily and Lotus" which resembled the Twisted Treeline legacy map.
Nexus Blitz
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Jax
Aaaaand, SLAM!
Sett
Picture #31
Tumble (Vayne)
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Worldbreaker (Malzahar)
This alternate game mode, was a 1-4 player PvE bullet heaven game mode.
Swarm
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Thresh
Once a Bandle gunner, always a Bandle gunner.
Tristana
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Death Mark (Zed)
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Warring Kingdoms (Garen)
This alternate game mode, first released on Feb 15h, 2015, identical to draft pick, let every player pick a champion for the opposing team.
Nemesis Draft
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Nami
You are null and void
Kassadin
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Cyclone (Wukong)
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Faerie Court (Kalista)
This alternate game mode occasionally is relaunched on April fool's day.
All for one
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Gangplank
To the arena!
Xin Zhao
Picture #34
Event Horizon (Veigar)
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Nightbringer (Lee Sin)
This alternate game mode was temporarily released for the "Snowdown Showdown" event in 2014 where players fought on the Howling Abyss.
Legend of the Poro King
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Vi
Let me give you a hug
Amumu
Picture #35
Vault (Quinn)