Disruptive (Combat)
Your training makes it difficult for enemy spellcasters to safely cast spells near you.
Prerequisites: Fighter 6th level
Benefit: The DC to cast spells defensively increases by +4 for all enemies that are within your threatened area. This increase to casting spells defensively only applies if you are aware of the enemy’s location.

(Fighter 10th level): Enemies in your threatened area that fail their checks to cast spells defensively provoke attacks of opportunity from you.

OPEN GAME LICENSE Version 1.0a - All text is Open Game Content.