Primordial Lord was a designation, or title, for a Primordial leader of the Creation War (1486 DE - 8777 DE). This position was held by wit, might, or both. A primordial lord gained additional powers and strength from this position; feeding upon the collective entropic energy of those under them. Some theologians claim the power that infused one to be a Primordial Lord was just a cruder aspect or even the beginning of what become known as Divine Power; that is gaining more power as you gain more mortal followers. The power level of a Primordial Lord is restricted by the amount of Chaos's free entropic energy. It is theorized that each Primordial Lord draws quite a bit of energy from the Chaos system, thereby limiting the maximum number of them. On the other hand, Divine Power comes from worshipers, which with population growth tends to go up over time, making the theoretical limit of Higher Powers infinite.
In the Creation War, there were a number of primordial factions. Most of them were Chaos Purists. They believed that the work of Creation needed to be undone, all of it returned to Chaos. This thinking became the Primordial Mandate. Others were less strict in their views, with groups like the Chaos Reformists believing that they only needed to defeat the Nawirrûs Covenant.