Believer's Boon

When you take this feat, choose one domain granted by your deity. You can use the 1st-level domain ability that clerics of that domain can use a number of times or rounds per day, but you can use it only once per day or 1 round per day, whichever is appropriate. Your effective cleric level in regard to this ability is 1st level. If the domain has a 1st-level ability that does not meet this specification, you cannot use it.