By Jennifer Piacenti In a flurry of moves, Houston shored up depth for a run at the World Series and we look at the fantasy ramifications. On Monday, the Houston Astros acquired 1B/DH/OF Trey Mancini from the Orioles as part of a three-team deal that sent OF Jose Siri to the Rays, RHP Chayce McDermott and RHP Seth Johnson to the Orioles. The Astros also acquired RHP Jayden Murray from the Rays. Shortly after, the Astros also acquired C Christian Vazquez from the Boston Red Sox in exchange for two minor leaguers. In their final move on Monday evening, the Astros sent SP Jake Odorizzi to the Bra…