They say history isn't what happens, it's what's written down. Such was the case for Ndaalu.
Ndaalu was cruel. Ndaalu was deadly. Ndaalu was strong. But most of all Ndaalu was pharaoh.
The people cried Ndaalu's name, begged him for mercy and bled by his sword. No ruler in all of Egypt was more brutal and cunning. By his lead Egypt slaughtered all*.
But who would honor such a terrible monster, even if he be pharaoh? So Ndaalu's scribes secretly omitted his name from their records, chiseled his name from their slabs. But Ndaalu knew.
Instead of slitting all of their throats, Ndaalu schemed with his sorcerers. If history would not remember him as a man the he would be remembered as an instrument of slaughter.
The sorcerers worked tirelessly to forge a great blade that would serve as Ndaalu's next body.
And so Ndaalu would live on vicariously through the heroes of the ages that took him as their mantle.**
*The bloodying of the Nile, commonly attributed to Moses, was Ndaalu's doing as he would execute surrendering armies by slitting their throats and holding them upside down by their feet to "feed" the Nile their life essence.
**The cherub's flaming sword that guards the gates to Paradise was directly inspired by Ndaalu.
The Meat & Potatoes
Put simply Ndaalu is a flaming sword, and dms could leave the details at that and run him as such, but the following text is how I run Ndaalu.
Ndaalu is a curved bronze sword peppered with 3d20 Egyptian hieroglyphics. These hieroglyphics are familiar and obscure and it is possible that they could help further the research of the written Egyptian language. The hilt is an extension of the blade itself and is wrapped with black leather straps.
The hieroglyphics serve as runes that capture the souls of living creatures slain with Ndaalu. A filled rune glows orange and gives off ember-filled smoke. These captured souls act as charges that the wielded can be spend towards different powers possessed by Ndaalu.
Ignite: The wielder can spend X charges to ignite Ndaalu. While ignited Ndaalu bequeaths +X damage to his wielder. Ndaalu stays ignited for X turns and counts as an everburning torch while ignited.
In this state Ndaalu cannot collect souls as the magical properties of the sword are focused on keeping it aflame. However slaying a living creature keeps the ignited state ongoing at a rate of 1 soul to 1 turn.
At 5 charges Ndaalu can cut through stone, worked or otherwise. At 10 charges he can cut through metal. At 20 charges he can cut through adamantine. At 40 he can wound a god. At 60 he can cut through the fabric of reality itself, opening portals into what lies beyond our own reality.
Great Balls of Fire: Ndaalu also functions as a Wand of Fireballs at double the cost. So if a system requires 2 charges to cast fireball with its wand than Ndaalu would require 4 charges to cast fireball. Ndaalu's fireballs are particularly deadly and deal +1 per damage die.
Increasing the level of the fireball also costs double.
Form of Fire: for 10 charges the wielder can enter a fire form. While in this form the wielder is under the effects of a Gaseous Form spell with the added side effect of igniting flammable objects. To exit this form the wielder must succeed at a save versus Magic. Failure means that a random body part is bequeathed in flame permanently.
Also the wielder can communicate with fire elementals while in this form.
Soldier of Slaughter: for 20 charges Ndaalu summons the soul of one of his soldiers. These soldiers are fighters of 2-5 levels and can only be hit by magic and magic weapons.
HD 2-5 AC 13 Atk bronze longsword 1d8 MV human
For every 2 charges above 20 spent increase the soldier's damage and hit points by one.
Wall of Flame: For 30 charges the wielder can cast the spell Wall of Fire as a magic user of his level.
In addition to the above boons, Ndaalu adds +1 to the hit bonus of his wielder for every week he is in his wielder's possession (max 10). Additionally Ndaalu gains +1 to his domination rolls against his wielder at the same rate (max 10).