Sammaster's lash

Sammaster's lash was a spell that created a ribbon of force.

Effects
When cast, this spell created a ribbon of force. It was yellow-white in color and flew through the air. It was very thin. The caster controlled the ribbon using willpower. The ribbon was nearly invulnerable, only a dispel magic spell or a powerful magical barrier was able to stop it. When struck, a targeted creature became temporarily paralyzed.

Casting
In addition to verbal and somatic components, the spell required a material component, three hairs from a ghast braided together.

History
This spell was known to be used by wizards of the Cult of the Dragon.