Devil, Infernal Tutor, Lesser 2014
CR 7 fiend
Medium fiend, lawful evil
Magical darkness doesn’t impede its darkvision.
Advantage: spell/magic effect saves.
Its speech has subtle enchantments that make it seem logical or profound regardless of words used. Has advantage on Cha (Deception and Persuasion) vs. Humanoids. If tutor spends 1+ min conversing with Humanoid creature has disadvantage on saves vs. tutor’s Fiendish Indoctrination and enchantment spells tutor casts.
Bonus Actions
Magically transforms into Small or Med Humanoid or back into its true fiendish form. Its stats except size are same in each form. Items worn/carried aren't transformed. Reverts on death.
Reactions
On successful save responds with magic insult if source is creature within 60'. Creature: 7 (2d6) psychic disadvantage on next save vs. tutor's spell (DC 15 Wis negates both).
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details