Answer:
I have three hundred cattle, with a single nose cord
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
Scythe of darkness, Shadow’s light. Guiding eye of thirteenth sight.
The man who made it didn't need it. The man who bought it didn't use it. The man who used it didn't want it.
What is round as a dishpan, deep as a tub, and still the oceans couldn't fill it up?
Dark, feathery, and popular in Baltimore and fantasy books.