Mutant spirit beasts were usually significantly more powerful than normal spirit beasts that matched their grades.

The ones gathered by the lakeside now were all mutant spirit beasts. They consisted of five sixth grade mutant spirit beasts and a seventh grade Earthshatter Beast.

Normally speaking, spirit beasts’ intelligence would be greatly developed after they entered the seventh grade. After entering the eighth grade, they would gain the ability to take different forms, including a human form.

That seventh grade Earthshatter Beast was the one that had let out that angry roar.

Furthermore, its bloodline power allowed it to shake the earth. The violent turbulences that had spread across Graydusk Forest just now had clearly been caused by it.

Its dark-red pupils shone with the light of intelligence as it stared coldly at Nie Tian.

From the look of it, it had long since noticed Nie Tian’s behavior after entering the forest, and was angry with him trampling...