Primary Nature—Statue!
All it did was allow the Petrified Geese to perfectly behave as a statue. It remained as still as an inanimate object; visible to the naked eye, and in terms of appearance, looked the same as it did normally—as a Pranic Beast.
The Primary Nature of Statue prevents it from sweating or even breathing. It has a specific set of pores on its skin that only allow air to pass through, using which the air necessary for the blood is obtained and expunged.
Once activated, the Petrified Geese typically maintains it until either a prey comes in the vicinity of it or it runs out of Prana. Once deactivated, it reverts to breathing through its lungs.
And now, Brangara was experiencing the effects of the Nature of Statue even without activating it. Of course, after some minutes of observation, he concluded it as a failure, "Iron Grade Natures aren't potent enough."