The Ghas Maidan, or Orb of Verdant Pastures, as it is known in the Common tongue, is a powerful artifact that turns up rather frequently in myths of various cultures. In the most popular stories, it is said to have been carved from one of the seeds of the World Tree.
The three Megiddo spears were commissioned by the archdevil Zariel for her three strongest champions. Carved from the tails of three red dracolichs by the mad efreeti Yakhun in the Elemental Plane of Ash, these spears possess a strong attunement to the plane. They were wielded for thousands of years in the Blood War, and slew uncountable hordes of demons.