"Once we got into it, it was apparent to me they were holding their own. They were all good young prospects and they kept us afloat."
The Vegas goalies would prefer not to get specific about Prior's magic touch.
"We keep it in the goalie circle exactly what he does," Lagace said, smiling.
He did speak in general terms about Prior's methods.
"He's got a different approach but it does help your game, makes you more aggressive and improves your confidence," Lagace said. "It's different the way he teaches it. He's a very honest coach. If there's something wrong he's going to tell [you]. But the same point, if you do something right he's going to tell you. He works you hard."
Prior said he wanted them to experience failure in practice.
"I set all of our goalies up in drills that they fail in," he said. "That's frustrating for a goalie getting scored on. Marc and I've had this conversation because he's not used to getting scored on. I make him play the situation honest, not cheat to get some kind of advantage.
"I said if we don't train in an area where you're going to fail, we're not making you better. It makes no sense for me to put you in a situation, in a drill where you're just going to stop the puck. So those were the things initially that rubbed him the wrong way."
Lagace said he loves working with Prior and that those methods helped him prepare better for games. Not that it was easy for the 25-year-old.
"If it's a bad day and you're on the edge and you keep getting scored on because it's a hard situation, it gets on you," said Lagace, the backup for the past five games (Subban has an undisclosed injury). "If you just succeed in practice, you get lazy and the way he approaches things he makes you work hard in pretty much impossible situations sometimes."
Holtby, selected by the Capitals in the fourth round (No. 93) of the 2008 NHL Draft, won the Vezina Trophy in 2015-16, his sixth NHL season. He continues to apply Prior's teachings.