With a touch, your magic corrupts the spells of your enemy.
Prerequisite(s): Ability to cast 5th-level spells, Spell Focus (Enfeebling).
BENEFIT
As long as you have an enfeebling spell of 5th level or higher in your known spells and have at least 5 MP in your MP pool, you can make another creature’s spellcasting harmful to itself. Use of this feat requires a melee touch attack that does not provoke attacks of opportunity. As a standard action, with a successful touch you can infuse another creature with baneful magic for a number of rounds equal to the level of the highest-level enfeebling spell you can cast. A successful Will save (DC 10 + half your caster level + your highest mental stat modifier) reduces this duration to 1 round. For the duration of the effect, each time the target completes the casting of a spell, it takes damage equal to the highest-level enfeebling spell you can cast, that determined the effect’s duration. Since the spell’s casting has already been completed, this doesn’t count as damage dealt during casting. As a secondary benefit, you gain a +1 competence bonus to your caster level when casting enfeebling spells.