is it like
for hp you must get hit
for evade and stand up you must use evade or stand up
for attack speed you must attack
etc.?
from googling i got only it had cca 2min cd and effect is pick random between three of them there.
all effects trigger when you are in combat, the trigger chance is very high so you can think of it like a buff that you get every 2 minutes, you can test this with the shield/heal buffs, go attack a random mob in open world and it will trigger almost instantly