The Warriors — after a brief 39-year pause, during which time man learned to walk upright and create fire — are back in the NBA Finals. The rookie head coach would take a great group of players, give them new tools to use, infuse them with a grade-school-level cornball team spirit, and see where that road might lead. [...] this, the Warriors team that beat the Houston Rockets 104-90 Wednesday at Oracle Arena, is a dream team for real. A big part of Kerr’s dream was that the Warriors would not only have stars, like Stephen Curry and Klay Thompson, but also that the stars would blend beautifully with the other players, and vice versa, and wherever they went, they’d get there in one big bus, not in two limos and 10 taxis. The Warriors had 135 assists in the five-game series, to 100 for the Rockets. Including Kerr, whose ego allowed him to trust in, and lean on, his assistant coaches. The boys all will take a bow together for this one, like actors at the finish of a boffo play, but you can throw roses onto the stage in any direction and hit a key contributor. [...] his 14 rebounds in 19 minutes came in handy, as did his physicality with the mighty bowling-ball-shouldered Howard, the man the Warriors once upon a time couldn’t win without. Draymond Green, many will say, had a subpar game, shooting 3-for-15, but he had 13 rebounds on a night when the Warriors outboarded the Rockets 59-39. Speaking of Green, guess who tied Curry for the Warriors’ most assists in the series, with 28? Some TV people and other experts might want to label the Warriors a jump-shooting team, and they are, but there’s a lot of hard edge and grit behind the pretty face. At times, this was as ragged as a noon-time pickup game at the YMCA.