In honor of his forthcoming Tome of Foes, I have added Mordenkainen to the Humanoids section. Personally I find converting spell casters difficult, I have the hardest time picking spells.
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xixecal
Amon
chichimec
Mordenkainen
tayellah
Balcoth
infernal
Dodkong
hecatoncheires
devastation centipede
phaethon
Maul-Tar
dream larva