Devil's Tongue

Your voice, regardless of the language chosen, becomes subtley enchanted. In an attack, you are vicious, dealing 1d4 of psychic damage to a target who can hear you that fails a Wisdom saving throw. If you descend from or worship a devil/demon/ fiend, you deal 2d4 psychic damage.
To charm, the target must succeed a DC of 8+ your proficiency bonus + your Charisma modifier, or it will become charmed. They will heed your word with admiration, regard you as a trusted friend, and have disadvantage on insight checks or persuasion saving throws. If you worship a deity of trickery, the DC is 10 + your proficency bonus + your charisma modifier. The target may make a wisdom saving throw at the end of their turn for up to three turns before the effects are made semi-permanent and last until you complete a short rest, leave that plane, or are killed. They will naturally end after 24 hours. A target cannot be charmed by multiple people at once and will resist any similar spells.