Your study of Hell’s laws improves your counterspells.
Benefit: You are able to modify more of your spells to use as counterspells. The DC of the Spellcraft check you must succeed at to identify an opponent’s spell is equal to 20 + the spell level of the opponent’s spell (instead of 15 + the spell level), but you are able to cast as your counterspell any spell from the same school of the foe’s spell (instead of the same spell). The level of the spell used to counterspell must be of a level equal to or higher than your foe’s spell.
Pathfinder Player Companion: Faiths of Corruption © 2011, Paizo Publishing, LLC; Author: Colin McComb.