Brangara obtained the Tertiary Nature of Cultivator by consuming a large number of Mammoth Clansmen. Of course, if not for the characteristic of his Primary Nature of Voracious Nature, he wouldn't have satisfied the conditions necessary to obtain the Nature of Cultivator.
He didn't use his Primary Nature, but its characteristics influenced his consumption of Mammoth Clansmen and with enough accumulation, paved the way for the birth of his Tertiary Nature of Cultivator.
The current Gannala was in a similar state to Brangara. She didn't have Voracious Nature but instead possessed Mystic Bone Art, which was also a power related to consumption.
Through his Mystic Skill Creator, Inala mapped out a route for her. Of course, the original route was long and abundant with risks. However, after he obtained the Mudropper's data, he was able to modify the route and make it a tad easier.
