Disrupting Spell (Metamagic)

You can preemptively counter a spell.

Prerequisite: Despoiling Spell, ability to cast greater dispel magic

Benefit: Upon a failed save against a disrupting spell, the next spell your opponent casts (including spell-like abilities) is subject to a dispel check, if successful the spell is countered as per dispel magic. An observer may attempt a Spellcraft check (DC 20) to discern what has occurred. A disrupting spell uses up a spell slot equal to the spell’s actual level.