Major Treasure—Serpentine Nature Bank!
But before Yarsha Zahaa was turned into a Major Treasure, she was a Tangible Nature. And at that time, through Orakha, she managed to obtain her Secondary and Tertiary Natures.
Primary Nature—Incident Nature Reflection!
Secondary Nature—Mystic Eater!
Tertiary Nature—Lunchbox!
While Inala was attacking Yarsha Zahara, he used Piezo Response to obtain as much information about her as possible. And then, when he was targeting her with the slaps, he used Perfect Biome Domination to access her data.
After stripping her dry of all Prana, her resistance against Perfect Biome Domination became nil, allowing Inala to smoothly absorb ever piece of data in her possession. That included everything she had done to the Mammoth Clan, Maroppa, Orakha, and how she gained two Natures despite becoming a Tangible Nature and what method Brangara used to turn her into a Major Treasure.
