Discombobulate

All targets within a 30ft sphere centred on the caster, have their heads teleported to another dimension. Their heads remain connected to their bodies, but are simply magically displaced.

While this causes no direct physical injury to those effected, it is greatly disconcerting, and leaves their bodies uniquely vulnerable to attacks. Those not subject to the spell, are free to attack them with advantage. NB - The caster of the spell, will always be subject to its effect.

The spell area is fixed in place, once cast. Anyone who enters the spell area while the spell is active, will also become subject to its effect. When an individual exits the spell area, that ends the spell effect on that target. 

While the spell remains in effect, those within the spell area cannot see, hear, smell or even taste, as their head is not present in this dimension to do so. Furthermore, their senses of touch and balance are greatly numbed, preventing them feeling their way around, or even being aware of any injuries sustained. They retain full control of their body, however, though any movement or action performed takes place at random. They can only communicate with the other heads, in the other dimension, who are unlikely to have any useful advice to offer.

A successful set of saves, ends the effect on the target that made it. The spell area will persist until the duration expires.

This spell was originally created by an ambitious student of magic, unwilling to accept that a teleportation circle could possibly be so complicated, that he couldn't manage it himself, and with much reduced component costs too.