Short story. The Butter Spirit’s Tithe first appeared in Emerald Magic, Tor Books. Conn O'Neill has run afoul of a vengeful spirit. With his soul promised as a tithe to the fearsome Grey Man, Conn's only hope lies Miki Greer. Miki knows a thing or two about Irish spirits, having lost her brother to them in de Lint's novel Forests of the Heart. She's not about to let them claim someone else.