race features:
Constructed Resilience. Your body is wrought in iron and gold. Some needs of flesh are not your concern. You have advantage on saving throws against being poisoned, and you have resistance to poison damage. You don't need to eat, drink, or breathe. You are immune to disease. You don't need to sleep, and magic can't put you to sleep.
Sentry's Rest. When you take a long rest, you must spend at least six hours in an inactive, motionless state, rather than sleeping. In this state you appear inert. It doesn't render you unconscious, and you can see and hear as normal.
Boon of the Predecessor. The Generosa that gave itself up to you, left you with a gift of their generosity. +1 bonus on all saving throws.
Old Soul. You gain proficiency with Insight, and one musical instrument.
Familiar Spirit. Mindless undead assume a Generosa to be undead like them, and will not engage unless by intelligent command or provocation. The Life Sense of Unending Wails does not detect a Generosa.
Relinquish. There is no going back from relinquishing. The Generosa gives themselves soul and body, to a new Generosa. In an act of extreme and unrepentant generosity, their memory is removed, their wants and desires forgotten. At the next dawn, a new person emerges with the body and the soul of their predecessor. But no memories and no access to that person who once was and is now gone. If this act is performed, but the requisite generosity is absent, it will fail. Instead the mind will be wiped, the soul wrenched from the body, and the body will lay as a lifeless husk.
Each Generosa is unique in its design, as it was built for an intended person. Now that may not be the person inside of them now, but all Generosa start that way. They always incorporate iron and gold as primary components. Most look like a rough iron statue of a person, with gold accentuating eyes and other other details.