BA-dump!

The heartbeat of the dragon pushes me up the arm.  Each part of me, a shard, asborb more of the dragon's body heat.

Ba-dump!

Some of the shards are killed by the dragon's immune cells.

Ba-dump!

I've not been in an animal this big before, and magical one at that.  I think I'm not going to have time to control the dragon, before it's immune system kills me.

Ba-dump!

Valves, I'm in the heart,  I release acid.  I'm a heart attack.

Stolen from its rightful place, this narrative is not meant to be on Amazon; report any sightings.

Ba-dump!

I'm in the lungs.  I cause more hemorrhages.  I am a hemorrhagic fever.  The dragon coughs up some blood,  I can see outside.  We are flying east, very fast, the moutain are receeding in the distance.

Ba-dump!

The dragon's immun system is causing a high attrition rate.  It's going to be a race to see who kills who first.

Ba-dump!

I'm in the brain.  I release more acid to get past the blood-brain barrier.

Ba-dump!

I'm a stroke.

Ba-dump!

The dragon crashes into the ground near a town.

I'm a hole in the ground again.

Knight - "Sire, it's been days, but we still do not know why the dragon died here.   Could it be a curse of some sort?"

King - "Who would dare curse a dragon?  Who would be powerful enough?  Where is the Mage?"

Knight - "The Mage is hold up in his tower.  He doen't answer any of our questions."

 King - "We need to know what caused this catastrophe.  Send word to the guild masters, send scouts to look for anything strange going on.  Send diplomats, to gain right passage through out the kingdoms."