In addition to transforming when reduced to zero Wounds, a Cathayan Dragon may transform from their Human form to their Dragon form, or vice versa, during the Command sub-phase of any of their turns. To do this, simply place the model that represents the form the Cathayan Dragon is transforming into so that it is:
Within 6" of the model representing the Cathayan Dragon's current form.
Not within 1" of any friendly models.
Not within 3" of any enemy
Once the model representing the Cathayan Dragon's new form has been placed, remove the model representing its previous form from play. When a Cathayan Dragon transforms in this way, it immediately recovers D3 lost Wounds.
A Cathayan Dragon cannot declare a charge during a turn in which it transformed and counts as having moved for the purposes of shooting, but can otherwise move normally during the Remaining Moves sub-phase.
Note that when a Cathayan Dragon transforms from their Human to their Dragon form in this way, they immediately leave any unit they were part of and that transforming allows a Cathayan Dragon to leave combat.