A couple engaged in a voodoo sex romp in Brooklyn set off the weekend blaze that killed a woman and left dozens homeless, sources said. A woman paid $300 to a voodoo priest on the fourth floor of the apartment building on E. 29th St. She wanted him to perform a mystical ceremony that would bring her luck, the sources said. The voodoo priest placed candles on the floor around the bed on Saturday. He lit the candles then the couple began having sex. Candles were accidentally knocked over, igniting bed sheets and their recently discarded clothes. Instead of calling 911, the man conducting the ceremony tried to put out the fire using water from the bathroom sink, the FDNY said in a statement. Someone else in the apartment opened a window and a door leading to the building's hallway, creating wind gusts that "shot the flames back inside, creating a blowtorch effect," fire officials said.A 64-year-old woman who resided in the building died and 47 families were left homeless. No one has been charged. But to sum up: the voodoo priest told the woman having sex with him would bring her good luck? What a crock -- and a crook!