Disrupting Spell

 
Prerequisite(s): None
 
Benefit: You can alter a spell so it interferes with one or more targets' supernatural and spell-like abilities, as well as any spells they cast. A disrupting spell temporarily lowers the save DC of any spell. Multiple disrupting spells do not stack. A disrupting spell has no effect on magic items. A disrupting spell uses a spell slot 2 levels higher than normal.
 
Source: Fiendish Codex II