Morphail's Unholy Blessing

Glantri: Kingdom of Magic

With clerics allowed in Glantri again, the evil Prince Morphail—a powerful vampire—created an unholy blessing to protect himself and his undead servants from priestly powers. This spell affects 1 Hit Die of undead creatures per experience level of the caster. When a cleric or paladin attempts to turn a creature so affected, the target undead may make a saving throw to resist, based on the level of the wizard who cast Morphail's unholy blessing. Undead that fail this saving throw find themselves affected normally.

Wizard's Spell Compendium

This spell gives undead creatures a saving throw against the undead turning powers of priests and paladins. For each experience level of the caster, 1 Hit Die of undead creatures is protected. When a cleric or paladin attempts to turn a protected undead, the undead creature receives the caster's saving throw vs. spell to avoid the effect. Undead that fail this saving throw are turned normally.

The evil Prince Morphail-a powerful vampire-created an unholy blessing to protect himself and his undead servants from priestly powers.