Mu You reviewed the 17 Divine Arts in turn and found their effects to be all fairly good, and some even had synergies with other divine systems that could unleash extremely powerful effects, such as 'Deepening Imbue': it could double the damage over time within a certain range.
This was clearly meant to synergize with the Fire Element's burning effect. All the Divine Arts of the Fire Element were essentially linked to burning, and this aura alone could double the damage of all Fire Element users.
There were several other impressive rules involving offense, defense, and support, making them appear quite versatile. No wonder, after all, these side Divine Arts were created by gods specifically for their needs, so it's normal that they are more practical than the initial Divine Arts.
Unfortunately, there were only 230,000 Divine Points in the Divinity Pool, which was only enough to unlock two Divine Arts.