'Amber egg clutched by Rennala, Queen of the Full Moon. Great Rune of unborn demigods. Perfects those who have been born anew. Children born anew by Rennala are all frail and short-lived. Imperfect beings, each and all.' Rennala, after Radagon left her to marry Marika, retreated to the heart of Raya Lucaria with a clutched amber egg and a private grief. The egg is the Great Rune of the Unborn, an artefact unlike any other Great Rune in the canon: it does not commemorate a victory. It commemorates a refusal. Rennala uses the rune to perform the canon's only documented rebirth: she lets a Tarnished pay her, in larval tears, to redistribute their attribute points. The mechanic is the trick the lore hides in plain sight. Rebirth itself, in this world, is a lesser act than birth. Rennala can re-make the body. She cannot make the soul whole.

'Children born anew by Rennala are all frail and short-lived. Imperfect beings, each and all.' Rennala and Radagon had three demigod children, Ranni, Radahn, Rykard, and yet the rune is named for the unborn; one reading, and the canon offers no firmer one, is that her grief holds a place for the children who never came after Radagon left. What is certain is narrower and sadder: Radagon's children with Marika, Malenia and Miquella, were cursed from birth in ways no rebirth-craft could reverse, and Rennala's own art produces only the frail and short-lived. The Tarnished can take the rune after the boss-fight, and it behaves like no other Great Rune in the canon: its description names no Divine Tower, it holds no benediction to restore, its only power is the rebirth Rennala herself performs, for as long as the Tarnished keeps bringing her larval tears.