How much/what information do the artists get other than card names? How much of the art concept is up to them? Was Wild Hunt supposed to have green spirits and a surprised moon for example?
Originally there was just the name, and maybe like "it's a medieval game or something."
Some Intrigue cards showed the wrong things. The original art for Pawn for example ended up on Goons. Steward showed a guy with a serving tray. So, after that, I typed up terse descriptions of what the card flavor was - nothing like your example, but a little for them to go on.
Guilds has mostly art by female artists. It still has mostly male characters though. For Adventures I started also specifying male/female on appropriate cards. For Empires I went further because I knew that "a crowd of people" would easily become "a crowd of only men." In fact there's an example in Empires of "a crowd of people including both men and women" drawn with all men anyway.
Wild Hunt is a European folklore thing - not so Roman but in the set anyway. I didn't go into that in the artist notes though.
Wild Hunt: A group of ghostly hunters, on horses and with hounds, in the sky, chasing prey.
The longest one for Empires is Enchantress.
Enchantress: A character like Circe in Homer's Odyssey; an enchantress who has apparently turned someone into a pig (but not shown doing magic).
And a few are very short.
Conquest: Visigoths attacking Rome.
