A Riddle Unsolved

Something novel: 
a good augury― 
creeping to augment, 
an esoteric fall. 
 
I repeat the mistake of knowing too much. 
 
Submodified. The man― 
still wants to bite the tongue 
on the name of truth. 
 
It was very unpleasant 
to see a hummingbird 
becoming a sphinx. 
 
No need to commit a suicide after homing, 
to a blazing icon in the urn.