LAS VEGAS — When Mark Stone returned to the Golden Knights’ lineup for Sunday night’s Game 3 of the Western Conference Final against Colorado, that also meant the return of Vegas’ five-forward power play.

With Stone down low, Mitch Marner shifted to the top in the quarterback role, sending defenseman Shea Theodore to the second unit.

No matter which player is at the top, the Golden Knights’ power play is humming.

Stone’s goal with the man advantage 19 seconds into the second period cut the Avalanche’s lead to 3-1 and sparked a two-period dominance for a 5-3 victory.

“I was lucky enough to find Stoney going backdoor,” Marner said. “From that point on, we just started rolling, the confidence started going a little bit, and everyone started feeling a little better about themselves. We’re a team that doesn’t have any quit in them. We want to make sure every game, regardless of the score, we’re fighting and we’re trying to come back and claw into it.”

And now the Golden Knights, who won the championship three years ago, are one victory from making their third Stanley Cup Final in their nine seasons. They go for the sweep tonight.

The power play has been a big part of that success. Vegas has scored on it in seven of the past eight games and is converting on a 25% rate for the playoffs, highest among the four remaining teams.

This isn’t just a small sample size, either. The Golden Knights ranked sixth in the regular season at 24.6%.

“We feel confident no matter who is on the ice,” wing Pavel Dorofeyev said. “We’re just trying to do our best to help the team to take advantage of the power play.”

No one took advantage more than Dorofeyev, who smashed the team record with 20 power-play goals in the regular season, topping the 14 that Tomas Hertl had just a year ago. Dorofeyev has four such goals this postseason.