Every Pranic Beast could create a Ravaged Tribesman using a Free Human. And when the Ravaged Tribesman becomes a Clansman, it will evolve the Pranic Beast to reach higher Grades.
Even Sumatra's Blessed Race, the Mystic Empyrean Tentacle, isn't immune to this rule. However, since an evolution has significant chances of messing up the method by which a Mystic Empyrean Tentacle is birthed, Sumatra made a rule to prevent it from creating a Ravaged Tribe.
Of course, the rule was that the Mystic Empyrean Tentacle, and its three variant Races of the lower Grades cannot make a Ravaged Tribe. That didn't mean a Ravaged Tribe couldn't be created through them.
It was a loophole of sorts, which got taken advantage of by an individual to become the Blessed Tribesman.
That was Torq, in his original timeline. The cultivation technique he created was the Iron Ravaged Art, which his compares helped develop over time.
