"Luck," he answers. Plenty of people in Darrow don't believe him when it comes to the whole leprechaun thing, some of his closest friends among them. That's fine, he doesn't need them to believe, because unless they start in on the offerings, it doesn't matter. Doesn't have any bearing on their friendship.

"Ever heard of a leprechaun?" he asks. Just like there are those who don't believe, there are those who don't even know what he is. "Irish folklore, little men who prance around and give out luck and gold."

Sweeney grins, because he's clearly not little, but he produces a gold coin from the air.