Power Scaling in Eternia 3

[Chance]

This is also relevant to the above:

Outlawed Magic

These techniques, while not considered forbidden necessarily due to their school of magic, but rather the danger they pose to society and the user themselves, are illegal depending on the circumstance under the nation's law. The category is also a factor in assessing the overall threat of a person's magic; someone with a level 5 technique might not be aligned with the dark forces of the world, but have the power and capabilities to single-handedly massacre thousands should they choose to do so.

• Category 1: The user can practice the techniques freely but must register it with their local authorities. Certain abilities that might allow someone to discreetly cause harm or assassinate a target, such as a powerful blood magic attack or enhanced poison.
  
• Category 2: They must be granted express permission to use the ability. The dark arts would fall under this as a general rule of thumb.
  
• Category 3: The potential for destruction is at a level where distant monitoring is necessary unless the individual is trusted. If someone has the capability to destroy a town with their magic, for example, whether it's a poisonous plague or through pure, raw force.
  
• Category 4: This technique could endanger society as a whole if misused, causing massive amounts of damage.
  

It is mostly background flavor though and I don't expect anyone to have to register to the city if they become a blood mage or whatever else.