The ability to condense the inhaled air and exhale it as freezing liquid gas.

This is a Non-elemental attack. This breath doesn't need any magical power but only strength in the lungs

Krystal's species as offsprings of ice and earth dragons, have ability to breath liquid gas but it's really limited.
Unlike furry bastard's pure ice dragons, the crystalizen's ice abilities are more similar to feather puffy birbs snow dragons powers.
As long as Krystal can use frost breath without any troubles, Defendaris find it hard to control.