As a standard action, a dragon horse can breathe out a 30-foot cone of mist. This mist either deals 10d6 points of cold damage (DC 20 Reflex half), creates a region of fog in the area that lasts for 1 minute (similar to that created by a fog cloud spell), or creates a blast of severe wind (see the wind effects table) in the area. The dragon horse may use this breath weapon once every 1d4 rounds. The save DC is Constitution-based.