Breath Weapon

Some creatures can exhale a cone, line, or cloud of energy or other magical effects. A breath weapon attack usually deals damage and is often based on some type of energy. Breath weapons allow a Reflex save for half damage (DC 10 + 1/2 the breathing creature's racial HD + the breathing creature's Con modifier; the exact DC is given in the creature's descriptive text). A creature is immune to its own breath weapon unless otherwise noted. Some breath weapons allow a Fortitude save or a Will save instead of a Reflex save. Each breath weapon also includes notes on how often it can be used, even if this number is limited in times per day.