Replacement Power: The following granted power replaces the touch of chaos ability of the Chaos domain.
You can make a single melee attack using your highest base attack bonus against a creature capable of casting divine spells. If you damage the creature, it must succeed at a Will save (DC = 10 + 1/2 your cleric level + your Wisdom modifier) or be unable to cast any divine spells for 1 round. If you do not damage your target with the attack, this ability is expended with no effect. You can use this ability a number of times per day equal to 3 + your Wisdom modifier.