Form of Flame (Su)
Source: Advanced Player's Guide, p. 47
As a standard action, you can assume the form of a Small fire elemental, as elemental body I. At 9th level, you can assume the form of a Medium fire elemental, as elemental body II. At 11th level, you can assume the form of a Large fire elemental, as elemental body III. At 13th level, you can assume the form of a Huge fire elemental, as elemental body IV. You can use this ability once per day, but the duration is 1 hour/level. You must be at least 7th level to select this revelation.