"Well," Crosswood said, putting a coaster on the bar with one hoof - slightly worn, with a picture of a black obelisk in the middle, circled by the words "InterVention" with a smudged date, and "Oh my god, it's full of beer" - and placed the mug on it in a smooth, gentle motion. "A beer is two bits. But it's also riddle night, so if you want, I can hold your tab for the evening in case you want to try your hoof at winning."