Devil's Tongue

Devil's Tongue Cantrip Casting Time: 1 action Range: Touch Components: V, S Duration: 1 minute
Description: With a guttural whisper and a touch of your fingertip, you grant a willing creature within range the gift of Infernal speech. For the duration of the spell, the creature can understand, speak, and read the infernal language. Additionally, you can choose one of the following effects:
Infernal Taunt: As an action, the creature you touched can unleash a torrent of mocking insults and pronouncements in Infernal. Each creature of your choice within 60 feet of the creature must make a Wisdom saving throw. On a failed save, a creature is affected by the creature's taunts for 1 minute. While affected, a creature has disadvantage on Charisma (Persuasion) checks and Dexterity saving throws. On a successful save, a creature is unaffected.
Diabolical Lie: When the creature speaks a lie in Infernal, you can roll a Charisma (Deception) check contested by the target's Wisdom (Insight) check. On a success, the lie appears flawlessly convincing to any creature that understands Infernal, regardless of their alignment or knowledge of devils.
Hidden Communication: While speaking Infernal, the creature's voice becomes inaudible to any creature that does not understand the language. This allows for secret communication and whispered plans amidst others.
At Higher Levels: When you cast this spell using a spell slot of 1st level or higher, the duration of the spell increases by 1 minute for each slot level above 0th. Additionally, the range of the Infernal Taunt effect increases by 30 feet for each slot level above 0th.
Classes: Warlock (any patron), Bard (College of Whispers), Sorcerer (Shadow Magic), Rogue (Oath of Treachery)
Lore: Whispered amongst shadowed gatherings and used by cunning fiends, Devil's Tongue unlocks the secrets of the Infernal tongue. This potent cantrip grants temporary fluency, allows for diabolical deception, and facilitates hidden communication, making it a tool for infiltration, negotiation, and sowing chaos amongst those who are unaware of the Abyss's whispers. With its versatile applications and infernal allure, Devil's Tongue demands a cautious tongue and a discerning mind, lest your own words lead you astray.
Notes:
This cantrip offers diverse communication, deception, and control options. The choice of effect caters to diverse party needs and roleplaying opportunities. The upcasting potential increases duration and the range of the Infernal Taunt effect, enhancing the spell's versatility. The morally ambiguous nature of the spell and its emphasis on infernal communication encourage creative roleplaying, strategic decision-making, and exploration of the alluring, yet potentially dangerous, power of the Abyss's tongue.