It would be good to figure out the Abyss, but how?
And yes, I'll copy the updated table so as not to mislead people. Tox is clearly Ezreal based on the description.
Jarvan IV - Lord1/Sky (killed by Chogath on the first night)
Caitlyn - Lynx (killed by Kog'Maw on the second night)
Garen - not Arandor, not Morning, not Gumer, not Lord
Kayle - Reven (killed by Urgot on the first night)
Poppy - not Gumer
Galio - not Morning, not Gumer
Nidalee - not Plesen, not Kosha, not Morning, not Gumer
Ezreal - Tox (killed by Malzahar on the third night)
Tiimo
Karma
Zilean - Ruddy (killed by Poppy on the third night)
Malzahar - not Gumer
Kassadin - not Morning, not Gumer
Chogath - not Morning
Kog'Maw
Katarina
Sion - not Morning
Swayne
Urgot - Zubr (executed on the second day)
Twist
To sell my soul