Augment Undead (Reversible)

This spell augments an undead creature's saving throws and ability to resist being turned. It can be cast only upon an undead creature with at least 3 Hit Dice fewer than the caster has levels. The undead is then treated as if 3 Hit Dice stronger for saving throws and for resisting turning attempts. Multiple castings of this spell are not cumulative. Casting this spell on the Demiplane of Dread requires a Ravenloft powers check.

The casting requires a piece of clothing from any undead creature, such as a zombie or wight. It can be reused indefinitely.

The reverse of this spell, diminish undead, requires the undead creature to roll a saving throw vs. spell. It can be cast upon any undead creature. If the saving throw fails, the undead creature saves and is turned as if it had 3 Hit Dice less than its true value. Multiple castings of the spell are not cumulative.

Notes: Restricted to necromancers and undead spellcasters. Common in the Ravenloft setting; otherwise very rare.