Epic Spellfire Wielder( , p. 136)
Your can store more spellfire energy levels than normal.
For the purpose of determining your limit of stored spellfi re energy levels, treat your Constitution score as if it were 4 points higher than it is.
You can select Epic Spellfi re Wielder multiple times. Each time you take this feat, your limit of stored spellfi re energy levels increases by 4.
Without this feat, a spellfi re wielder's limit of stored spellfi re energy levels is equal to her Constitution score.