Aura of Diplomacy

You exude an aura of peace that magically calms those around you, and enhances the persuasive abilities of you and your allies. The aura has a range of 120 feet, is centered on you, and moves with you.

Master Diplomat: You magically enhance the diplomatic skills of yourself and any number of creatures that you choose within the aura. For the duration, the affected creatures gain proficiency in Deception, Perception, Insight, Intimidation, Performance, and Persuasion. If a creature already has proficiency in one or more of those abilities, they gain expertise in those abilities instead.

Calming Presence: Creatures within the aura become peaceful for the duration of the spell. They are unable to attack, cast harmful spells, or otherwise cause intentional harm to another creature (such as by stealing from them). Ongoing harmful effects (such as a spell that requires concentration) end while within the aura, but a creature can choose to resume the effect after leaving the aura, or after the spell ends.

True Communication: All creatures within the aura can understand each other, regardless of language. Also, a creature cannot intentionally lie while within the aura.

Binding Treaties: Any agreements you make with another willing creature for the duration of the spell (either verbally, or through a written contract) become magically binding (even after the spell ends). A creature cannot willingly break the terms of the agreement, and is magically compelled to uphold their side of the bargain to the best of their ability. If the agreement has a fixed duration, the compulsion lasts for the duration. If no duration was agreed upon, the compulsion remains for 1 year. If you or an allied creature attempts to harm a creature affected by this spell, the spell ends.