Blackfire Taint (Su)

At 2nd level, as a standard action, a Blackfire Adept can corrupt the planar substrate into strands of blackfire that create a destructive resonance between herself and a target within 30 feet. She gains a +1 profane bonus on attack rolls and caster level checks against the target, and the target takes a –1 penalty on saving throws against the adept’s attacks (or –2 if the attack is a conjuration effect). The taint lasts a number of rounds equal to her class level, though a successful Will save (DC 10 + the Blackfire Adept’s class level + the Blackfire Adept’s Charisma modifier) reduces this to 1 round. The effect immediately ends if the target moves more than 30 feet away from the Blackfire Adept.

The profane bonus and penalty become +2 and –2 (–3 against conjuration effects) at 6th level. They become +3 and –3 (–4 against conjuration effects) at 10th level.