Celestial Infant 2021

This is the official information about celestial infants. You need to be Pious Sky I and level 105 to get the celestial infant.
Once the infant is awakened, you can transform into that infant and can battle using the infant skills. Lasts 30 seconds with a 30 min cool down, but when you transform back, you will have some really nice buffs that last for an hour.

https://pwi.gamepedia.com/Celestial_Infant