Immunity to undeath

Immunity to undeath was a powerful arcane alteration and necromancy spell that protected the caster from energy draining attacks.

Effects
The spell created a globe of energy with a radius centered on the caster. The globe moved with the caster and anything within was protected from any form of attack regarding energy draining, strength draining, or mental attacks. Furthermore, undead powers that caused fear, aging, paralyzation, or death would not function. Someone on the perimeter of the globe was still protected provided at least part of their body was still within the globe.

All creatures could still pass freely through the globe. Undead within the globe were unable to change their physical forms. Dead bodies could not be animated within the globe. Incorporeal undead such as ghosts and shadows were clearly outlined while within the globe.

The spell lasted for several minutes depending on the caster's skill, but the caster could not end the spell early, but the protective globe could be successfully dispelled.

Components
In addition to verbal and somatic components, this spell required as material components a drop of the caster's blood, a single plant seed, and drop of holy water to cast.