The Emperor

Nachum's mind reeled at how fast the unwanted visitor unleashed such a powerful magic attack without so much as emitting a magic fluctuation around him.

It should be noted that whenever mages planned to unleash a powerful attack, the magic energies around them would react, producing fluctuations and even distortions in space. Although concentrated magic attacks did not usually require a mage to create magic arrays, others would still use them to amplify their power. In cases where a mage would not use one, the intensity of their attack would not be as powerful.