ANAHEIM, Calif. — The Avalanche have shown a knack for late-game comebacks over the first six weeks of the season, but Sunday’s rally to start off a three-game trek was something new. NHL scoring leader Mikko Rantanen tallied with 1.3 seconds left in overtime to send Colorado to a 4-3 victory over the Anaheim Ducks, the team’s first triumph in five trips to the extra period this season. The goal came from a pass by Nathan MacKinnon, whose goal at the end of the second period and shot that was deflected in by Gabe Landeskog a little more than midway through the third period spurred the Avalanche (10-6-4, 24 points) back from a 3-1 deficit. It was the fifth comeback win for Colorado, which plays 12 of its 16 games at home following Wednesday’s game at Los Angeles and Friday’s at Arizona. “We’re kind of a little bit of a roller-coaster in overtime,” head coach Jared Bednar said.