Extra Exhalation( Races of the Dragon, p. 102)
You can use your breath weapon one more time per day than normal.
breath weapon with limited uses per day, Dragonblood subtype,
You can use your breath weapon one additional time per day. The interval you must wait between breaths is 1d4 rounds.
You can gain this feat multiple times. Each time you take it, you can breathe one additional time per day.