At 8th level, you can emit a 30-foot nimbus of light for a number of rounds per day equal to your cleric level. This acts as a daylight spell. In addition, undead within this radius take an amount of damage equal to your cleric level each round that they remain inside the nimbus. Spells and spell-like abilities with the darkness descriptor are automatically dispelled if brought inside this nimbus. These rounds do not need to be consecutive.