Blast Rune

As a standard action, you can create a blast rune in a desired location. Any creature entering a 5-foot area around the rune takes 1d6 points of damage + 1 point for every two levels you possess in the class that gave you access to this domain. This rune deals either acid, cold, electricity, or fire damage, decided when you create the rune. The rune lasts a number of rounds equal to your level in the class that gave you access to this domain. You can use this ability a number of times per day equal to 3 + your Wisdom modifier.