Item from Mother of Learning by nobody103
The key ingredient for a potion of eternal youth — a rare magical creature's egg that Silverlake has been hunting for centuries and will betray anyone to obtain.
The grey hunter egg is not valuable for what it is but for what it makes possible. Silverlake's centuries-long quest for these eggs drives her entire involvement in the plot — she'll ally with anyone, betray anyone, and do anything to obtain the alchemical ingredients for true eternal youth. The eggs are rare because grey hunters are rare, dangerous, and protective of their nests. Obtaining one requires tracking an apex predator through wilderness or dungeon terrain, surviving the encounter, and extracting the egg without damaging it. The fact that Silverlake has been trying for centuries and hasn't succeeded says everything about how difficult this is.
Larger than a chicken egg with a mottled grey-green shell that has an organic, almost reptilian texture. Faintly warm to the touch. The shell has a subtle iridescence that becomes more visible in dim light — the contained magical potential is evident even to non-mages. Extremely fragile and must be handled with alchemical-grade care.
Also known as: Grey Hunter Egg, Hunter Egg