Amelioration!
The progression of Edicts was extremely unique as the more one used and became familiar with the Edict, the faster this number rose.
It wasn't just simple repetition though, as one had to experience the meaning of the Edict through their actions!
For example, Noah's Cessation had already risen to 3% in the past days while the newly born Kismet had actually gone past this and had a progression of 8%!
This was due to Noah only being able to experience the qualities of Cessation during the battles where he utilized it, and just him repetitively dousing himself in Cessation didn't mean his progression would shoot higher.
But Kismet...he could experience what it was every time he discerned destiny and used abilities like <Reader's Foresight> and <Path to Victory>!