"Do you know the eggs story ?"
On this world most creatures are cursed. When they die, they're bounded to rebirth ... Forever !
Even if they loose some minor propriety when dying, they most precious belonging are never found. The explanation where discovered by an Alchemist named GemStone :
When the creature dies, a kind of "Soul Egg" flies away. This egg will eventually rebirth the same creature a few seconds or minutes later. But, the most precious belonging of the creature stays inside this "Egg" ... Unfortunately all those Egg are invisible !
GemStone cast a global enchantment, and sometimes, the Egg stays visible.
Well, there is still lot of mystery in those Eggs. Will you find some of them ?