Essence of Order is a crafting reagent in Ultima Online, primarily used in the Imbuing system to enhance or modify magical properties on equipment. It is obtained as a loot drop from undead and ethereal creatures, including monsters such as wailing banshees, skeletal knights, and phantom-type entities found in specific dungeons and hunting areas. Due to its role in imbuing high-quality gear, Essence of Order is a sought-after material among crafters and warriors looking to optimize their armor and weapons. Its market value fluctuates based on supply and demand, making it a staple item for trade within the game's economy.