Deep Magic Volume 2 (p.145)
Bone of Contention
5-level Enchantment
Casting Time: 1 action
Range/Area: 90ft.
Components: Verbal, Somatic, Material
Materials: a small bone
Duration: 1 minute
Attack/Save: WIS Save
Damage/Effect: Control
You cause discord in up to eight creatures you can see within range. Each target must be within 30 feet of at least one other target. The targets must share a language or the spell fails. Each target must make a Wisdom saving throw. On a failure, a target begins bickering and arguing with other affected targets on topics relevant to the targets. For example, religious creatures might argue over doctrine, while warriors might argue over the most efficient fighting stances or ways of dispatching foes. For the duration, each affected creature’s speed is halved, and it spends each of its turns arguing with another affected creature.
An arguing creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If an arguing creature starts its turn with no other creature within 30 feet of it with which to argue, the spell ends for that creature. Otherwise, the spell ends for all creatures if an affected creature takes damage.
Available for: Bard, Cleric