Disciple of Freedom is a heroic tier feat available to characters with a Charisma score of 13 or higher.
Normally, characters suffering an effect that a save ends make a saving throw at the end of their turn. Characters with the Disciple of Freedom feat who are immobilized, slowed, or restrained, and can make a saving throw to end one of those three effects, make an additional saving throw to end that effect at the beginning of their turns.[HotFL:312][HotFK:312]
Although the rulebooks' flavor text for Disciple of Freedom mentions Avandra, exclusive worship of that deity is not a prerequisite for the feat.