Primal Seed

A Primal Seed is a primary substance that, when nourished by the Primordial Essence, gives rise to the first sentient forms of energy that begin the process of creation and development of the realms. For each of the spheres, there was only one Primal Seed, created by the Outsider and entrusted to the Overgod of those realms.
Each Primal Seed possesses unique characteristics which, when in contact with the uniqueness of the Primordial Essence, generate different results, though often structurally similar.
It is not possible to find the Primal Seed of already developed kingdoms, but some ambitious deities try to recreate the exploits of this unique material, with the desire to someday build their own universe and dominate over it. This achievement, however, has never been reached to the best of our knowledge.