"The Argonian Chosen has something of a mismatch between her skills and spells. As a result of her Marauder Archer class, she does not have either Destruction or Illusion as major skills. Due to this and the NPC skill leveling mechanism, she is only be able to cast Novice-level spells, even at higher levels. Since all spells in the Destruction and Chameleon leveled lists are at least Apprentice-level, she can never cast any of these."
"The Dark Elf Chosen also has something of a mismatch between his skills and spells. As a result of his Bandit Archer class, he does not have either Alteration or Conjuration as major skills. Due to this and the NPC skill leveling mechanism, he is only be able to cast Novice-level spells, even at higher levels. Since all spells in the Alteration and Bound Armor leveled lists are at least Apprentice-level, he can never cast these."
" The Imperial Chosen has a more severe mismatch between his skills and spells. As a result of his Marauder Mage class, he only has Destruction and Restoration as major skills. Due to this and the NPC skill leveling mechanism, he is only be able to cast Apprentice-level spells for all other magical schools from level 26. Since all spells in the other magical schools leveled lists are at least Apprentice-level, he can never cast these before then."
https://en.uesp.net/wiki/Oblivion:Boethia%27s_Chosen
Issue Data
Issue #37194: Boethia's Chosen cannot cast some of their spells