Ectoplasmic Feedback(Libris Mortis: The Book of Undead)
Level: Sorcerer 3, Wizard 3, Spellthief 3,
Components: V, S,
Casting Time: 1 standard action
Duration: 1 min./level (D)
A sheath of energy that reacts to incorporeal touch attacks protects you.
Any creature that hits you with an incorporeal touch attack takes 1d6 points of force damage +1 point per caster level (maximum +10).
If the attacker has spell resistance, it applies to this effect.