Magic cost:

Early stages of decay-

- Low grade spells/ very basic magic = a feeling of weakness or a headache. The more powerful the wizard the less this level affects them.

- Low to medium = weakness is more pronounced, shaky limbs, dizzy.

- Medium = Nose bleeds, migraines 

- High/ powerful spells = coughing up blood, pain throughout the body. (Wouldn't kill a person)

- Very powerful = random cuts to the body, depth and length depend on the spell. (May serious harm a person)

These affects stack, so if you move through the spell power levels you will progressively feel worse and worse. 

More to be added later.