Mestil's acid sheath

Mestil's acid sheath was a conjuration spell used by wizards and sorcerers. This spell was created by Mestil.

Effects
This spell enclosed the caster in a sheath of fluid acid. The caster was not harmed by the acid sheath and could perform all of their normal actions. Any creature striking the caster with a part of their body, such as a claw or bite, was harmed as the acid splashed on them. The caster could also strike out with their hands to inflict corrosive harm.

If cast while riding, the acid sheath would instantly harm the caster's mount, prompting the mount to try to buck the caster.

Components
In addition to verbal and somatic components, this spell required a handful of fire ants and a glass sculpture of a humanoid to cast.