Charmthwart

Charmthwart was an abjuration spell that protected its caster from charm spells that fell within the greater enchantment school of magic.

Effects
Upon casting charmthwart, a continuous singing sound surrounded the caster for a number of seconds. For its duration, they were protected against charm magic to which they were previously susceptible. The spell could be prematurely ended the will of the caster.

History
Developed by the wizard Sammaster during his early years training in the Art, the discovery of this spell was the result of arcane experimentation.

Casting
This spell only required somatic components to cast.