Shadowbane Spell [Metamagic]
Your spells are more effective against creatures of Shadow.
Benefit: Creatures of Shadow and characters with shadowblood (humans of shadow heritage, or elves and dwarves, for example) take a –4 penalty on the spell’s saving throw.
This feat cannot improve spells that do not allow saves.
A shadowbane spell uses up a spell slot one level higher than the spell’s actual level.