Phaerimm Eggs

Phaerimm Eggs were the eggs of the abberations known as Phaerimm.

Initially they were sold by the Traders' Guild as a substitute to Green Stone. It had the same effect when it came in touch with magic, though it was later found that the magic was not nullified, but absorbed by the fetus of the phaerim inside to help it grow and break the egg. When cracking the egg, the fetus of the Phaerimm could break free if it had previously absorbed enough magic to sustain its life or instantly die. There are rumors of cases where these types of eggs were found inside the bodies of those controlled by the Phaerimm as a parasitic entity, which hatched when the person died in battle and thus the Phaerimm within was able to break free.