Threnodic Spell (Metamagic)Source Ultimate Magic pg. 157, Osirion, Land of the Pharaohs pg. 27 You can convert mind-affecting magic to necromantic power capable of controlling undead. 
  Prerequisites: Knowledge (religion) 6 ranks, Spell Focus (necromancy).
  Benefit:  This feat only works on mind-affecting spells. A threnodic spell affects undead creatures (even mindless undead) as if they weren’t immune to mind-affecting effects, but has no effect on living creatures. A threnodic spell uses up a spell slot two level higher than the spell’s actual level. 
  Normal:  Undead are immune to mind-affecting effects.
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