Ice hockey in the desert might have somewhat of a checkered history in the National Hockey League, but two Am Law 200 firms are advising on a $500 million deal announced late Wednesday to bring a professional hockey club to Sin City in time for the 2017-2018 season.

The agreement ends a decades-long drought by Las Vegas in its repeated efforts to recruit a team playing in one of North America’s four leading professional sports leagues. William Foley II, a former Phoenix real estate lawyer-turned-billionaire in his role as chairman of the board at title insurance giant Fidelity National Financial Inc., will own a majority stake in the NHL’s 31st team, with the Maloof family owning 15 percent of the as-yet-unnamed expansion franchise.