It's highly unlikely that Crozier will play significant minutes in Game 5 if he plays at all, as it's more likely to be a depth move in case something happens throughout the rest of the series, but for the 25-year old, this will be an incredible experience.
Over the past two. years, Crozier has played in 18 games for the Lightning, tallying two assists and a -2 differential over that time, as it's safe to say that Tampa Bay likely don't have huge plans moving forward for the former fourth-round draft pick.
As of right now, all we know is that the Lightning are trying to fend off elimination in Game 5, so whether or not Crozier plays a part in that is yet to be seen, but given the way their bottom pairing has been playing, it may not be the worst move to insert Crozier into the lineup at home.