Spirit armor

Spirit armor was an uncommon necromancy spell that surrounded the caster with a portion of their own life force, which acted as magical armor.

Effects
The necromancy spell took the form of a shimmering aura, which protected against magical and physical attacks. Specifically, the magical armor acted the same as splint mail, but was not cumulative with other types of protection. However, the spirit armor did not slow movement or encumber the caster, unlike regular armor.

When the spell ended, the magical aura ceased to exist, and the caster had a chance to lose a portion of their life.

Components
The spell only required verbal and somatic components.

Variants
A slightly more powerful variant of this spell was found around the Sword Coast. This version of the spell made the spellcaster's magical barrier as strong as plate mail, instead of splint mail.