Mass suggestion

Mass suggestion was an enchantment spell that could compel multiple people to perform a course of action dictated by the caster.

Effects
When casting the spell, the caster could choose up to 12 targets and suggest in one or two sentences a course of action. If the action did not involve any obvious self-harm, targets that could not resist the effects of the spell were compelled to perform the task for 24 hours (or until the task was completed), or longer in more powerful castings of the spell.

Components
The spell required verbal and material components. The materials required were a snake's tongue and either a drop of oil or a piece of honeycomb.

History
The spell was attributed to Netherese arcanist Hamring in -1293 DR and was originally called Hamring's mass hypnosis.