Empower Undead (3.5e Feat)
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Empower Undead [Necromantic]
Undead you create are empowered with the fires of hell
Prerequisite: Able to create undead
Benefit: When you create an undead creature you may choose to add a ruby worth at least 25 gp to the material components of the spell. If you do, the undead creature gains +6 profane bonus to Strength. An undead created in this way counts as one Hit Die higher for the purposes of creating it and controlling it.