You disrupt the target creature's ability to draw upon magical energies. For the duration of the spell, it gains the negated spellblight.

A negated spellcaster has his ability to manipulate magical energies disrupted. He gains spell resistance equal to 10 plus twice the highest spell level he can cast. This spell resistance cannot be voluntarily lowered. In addition, anytime he casts a spell, he must make a caster level check (1d20 + caster level) against this spell resistance. On a successful check, the spell is completed and the spellcaster's spell resistance is removed until the start of his next turn. Failure indicates he failed to muster up enough magical energy to cast the spell, but the spell is not lost and may be attempted again. Any feats or abilities that aid in bypassing spell resistance help with this check.

Restoration suppresses the negated spellblight for one day.

Dispel checks to remove the spellblight take a –5 penalty due to this spell's interference with magical energies.