First it was a trickle, then it became an onslaught. The Nuggets rained down 3-pointers in the second half to drown the Spurs, 132-126, in Wednesday’s seeding game at the Orlando “bubble.” And, for the second consecutive game, Denver’s surging rookie, Michael Porter Jr., was at the heart of the offensive. After setting a career-high with 37 points on Monday, Porter backed it up with the consistency his coach had been searching for.