In accordance with the descriptions in the remaining documents in the maze ruins, magic power was a gift bestowed on uncommon people by the deities. Everyone who could use it must have a Key to unlock the Source of Magic Power. That was why only a few could use this prevailing power.
More importantly, each Key was different.
Some witches were extremely powerful, who could summon strong storms or make the dead come back to life, but some were only able to use their power to cook a bowl of oatmeal or mend broken clothes.
What caused such great differences among the Awakened?
This question had baffled the Union for hundreds of years until the remaining witches of the Union had found the documents in the maze ruins. By studying those records, they had found a vague explanation for this phenomenon.
The differences in the witches' abilities and power were caused by the differences between their Keys.
A Key had nothing to do with a witch's magic capacity but was closely related to the essence of the magic power. Every time a witch used her ability, she would turn part of the magic power into reality. As this was an extremely complicated process which could not be completed by the witch alone. The deities would also take part in it.
However, as the deities had a preference for some witches, the Keys varied in terms of how complex the processes were. Some were very simple, but some were exceptionally complicated. A Key's complexity determined the upper limit of the amount of magic power a witch could use.
No. 76 had not quite understood this explanation until Pasha had given her an example, the Magic Stones. A witch could use them to realize various magic effects without any change in her own Magic Cyclone. That meant the magic power used by different witches who had various abilities was actually the same thing. No matter she was an Extraordinary or a Senior Witches, she used the same power.