Humanize This Entire Text: Upon Leo's endeavor to administer the ancestral reversion catalyst onto Karai, who bore the semblance of a mutated serpent, the anticipated outcome did not transpire. Leo turned towards Donnie, seeking an elucidation for this divergence, only to be apprised that Karai's uniqueness precluded the envisaged effects. What transpired therein denoted the capricious nature of the catalyst, veiling the potential endowments it might bestow upon its recipient. Hence, Karai's distinctiveness stemmed from being an exceptional case, shielded from the repercussions of the aforementioned reversion catalyst, a peculiarity induced by the capriciousness of the catalyst. An additional peculiarity delineating her departure from conventional mutation resides in her faculty to transition seamlessly between her humanoid guise and her mutated manifestation at will.
When Leo tried to use the ancestral reversion catalyst on Karai, who looked like a mutated snake, it didn't work as expected. Confused, Leo asked Donnie why it didn't work. Donnie explained that Karai was unique, and the catalyst didn't affect her the way they thought it would. This showed how unpredictable the catalyst could be, making it hard to know what it might do to someone. Karai's special case meant she was immune to the catalyst's effects, a quirk caused by the catalyst's unpredictability. Another unique thing about her is that she can switch between her human form and her mutated snake form whenever she wants.