For the last three seasons, Mark Stone has been placed on the LTIR just before the trade deadline. This allows Vegas to acquire much more salary in trades, and then ice a super team in the playoffs when Stone miraculously returns for game one. This year, Stone was placed on LTIR on February 22nd, and given an indefinite timeline for recovery. It's a real miracle he's back just in time for the playoffs, apparently.
Now, none of their salary cap shenanigans will matter, and the Vegas Golden Knights will enter the playoffs with the best roster they've had all season, looking to defend their Stanley Cup from last season.