Breaching (Su)

At 5th level, when a Blackfire Adept attempts to call or summon a creature from one of her blackfire pact subtypes into an area where summoning is blocked by a magical effect (such as magic circle against evil, forbiddance, or dimensional lock), or when a creature within 30 feet she has called or summoned from her blackfire pact would have its attacks against a creature blocked by such an effect, as a swift action she can sacrifice a prepared spell or spell slot of the same level as the warding effect. If her caster level is higher than the caster level of the warding effect, it is immediately negated. If it is the same or lower, a caster level check (DC 11 + the caster level of the warding) is required to negate the warding effect.

At 10th level, a Blackfire Adept’s breaching can penetrate and destroy an antimagic field, a prismatic sphere, or an extradimensional shelter like a mage’s magnificent mansion, though a caster level check is always required regardless of the Blackfire Adept’s caster level. She can summon creatures into a naturally magic-dead area (such as the Mana Wastes) with a successful DC 31 caster level check, but the magic-dead area is not negated.