There is a long explanation for these...I have to take the time in a few days to write it, but basically these are the embodiments of actual suns...The claws and nose horn are spewing whitish orange flame...Within the head is a smoldering orb that can be seen through the sockets(No eyes), there is also an orb in the chest, and in the tail...Normally if it's two twin suns in a system, the tail will manifest holding two orbs...Reference to the tail details can be found here:

[link]

When the star dies, like in the physical it is affected in the alternate...The dragon's sun orbs go through the same death as a star would...The end result is an extremely dense sphere set in the chest, mouth and tail...If ever opened it would expose a fantastical diamond...


It's pretty believable...Hehe...

These are mine, but I have no issues with others looking to use this...Just give credit where it's due...The dragon can have any draconic feature imaginable, but to be an "Incendiary Body" it has to have the self-contained stars within the body...