Carter Stuff

Crown
There is nothing mentioned within the books of Az Tor's library. Simon has a book on him that covers some very loose and vague information- the crowns of Zereul were forged in the distant past to provide Zereul's armies with better leaders- while the goblins, orcs, or other beings found in his ranks were great fighters, they lacked any real strategic intelligence. The crowns would allow for the corruption and control of those who wore them. Those already loyal to Zereul would find themselves empowered when wearing a crown.

The exact source of the crowns is unknown, but it's almost certain that some powerful spellcaster in league with Zereul or his aspects had a hand in their creation.

Goblin Civilizations
There is very little information on goblin civilizations, or truly, the lack thereof. Goblins often live in fractured clans and tribes, ruled by a king or chieftain. Goblins were among the lowest in the ranks of Zereul's armies, useful for swarming or raiding in large numbers. They are truly chaotic beings, living moment to moment on instinct and whim with little intellect or logic behind their actions. They bow to displays of power and pain.

The Sword
You and Simon find passing mention of multiple Swords of Uriel, forged in the distant past to serve as weapons against evil. Among the books, you gather accounts of at least three other similar swords wielded by devout followers within the ancient city of Tor.

Significance of the Eclipse
The Eclipse is a truly sacred event for followers of Uriel, considered to be when Uriel is closest to the material plane. Az Tor serves as a city devoted to Uriel, with the Moon Pool acting as a large font of his power.