Spiritual Disruption (3.5e Maneuver)

''You notice the wizard's aura shifting into position before he even begins his arcane words of power. With a quick strike, you go to disrupt his spellcasting plans.''

The art of spellcasting and magic often involves the manipulation of things unseen to mortal eyes, but to an Anima River adept, you have learned to sense the disruptions in the eddies and currents of spiritual energy. Whenever a caster attempts to use a spell or spell-like ability when you threaten them, you may take an immediate action to disrupt their casting. Make a melee attack with a +2 bonus on your attack roll, and deal an additional +6d6 damage on a successful hit.