making a thunderclast from breath, Kalad's Phantoms

[Pinpoint]

I just had a thought, If you had a remarkable amount of breath, you could make a thunderclast. How powerful would that be. An awakened giant stone creature. would if have powers similar to knightbloods?  You could even instill it with the command to bring desolation every once in a while if you were skilled enough.  

I also noticed that thunderclasts are a lot like Kalad's Phantoms. The reason the phantoms work is because they have bones inside of them allowing them to become really tough lifeless. I think that because of the material thunderclasts are made of, Odium is enabled to manipulate and create them using his own type of spren