pf2e.fyi
From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Noble Bloom

FEAT 5
UNCOMMONEMOTIONLESHYMENTALVISUAL
Activity reaction
Access chrysanthemum leshy heritage
Trigger An ally within 30 feet would be reduced to 0 Hit Points but not immediately killed.
Frequency once per day

Certain plants and flowers hold a reputation throughout Tian Xia for being strong and upstanding, able to weather adversity. In the moment your ally would succumb to their injuries, you stand tall and bloom proudly, radiating this strength for them. Your ally avoids being knocked out and remains at 1 Hit Point, and their Wounded condition increases by 1, as does your own.

Pathfinder Lost Omens Tian Xia Character GuideORC