Tiassa by Steven Brust
Once, Vlad Taltos knew his trade: he killed people for a living. That skill got him his foothold in House Jhereg, running the rackets for a chunk of urban Adrilankha. Later, things happened that left Vlad a changed man, on the run from the Jhereg and frequently involved in the affairs of Dragonlords, Empresses, and even Jenoine. Far more involved than the average human. Meanwhile, in the very distant past, one of the gods fashioned an artefact - a silver figurine of a tiassa, a winged pantherlike animal. To Devera the Wanderer, it's a pretty toy to play with. To Vlad, it's a handy prop for a con he's running. To the Empire, it's a tool to be used against the Jenoine. And to the Jhereg, it's a trap to kill Vlad. As it happens, however, the silver tiassa has its own agenda.