Heighten Breath
( Draconomicon, p. 70)[Metabreath]
Your breath weapon is even more deadly than normal.
Prerequisite
CON 13, breath weapon,
Benefit
You can increase the save DC of your breath weapon by any number up to a maximum equal to your Constitution bonus. For each point by which you increase the save DC, add +1 to the number of rounds you must wait before using your breath weapon again.