the luck of the devil
Extremely good luck or fortune. I can't believe I won the lottery and a radio contest in the same week—I have the luck of the devil! You'd need the luck of the devil to find a room to rent that's less than $800 a month in this city.
luck of the devil
Also, luck of the Irish. Extraordinarily good fortune, as in You've the luck of the devil-that ball landed just on the line, or Winning the lottery-that's the luck of the Irish. These superstitious attributions of good fortune date from the first half of the 1900s.