Who's the Boston Bruins' X-Factor?

Going into the 2022-23 NHL season, who would you say is the Boston Bruins' true X-Factor? Some would say an X-Factor for any given team would be a player that nobody would expect, someone else other than the stars.

As per @crosscreased and @dailydosehockey, that's not entirely true for the Bruins. Their social media teams listed one X-Factor for all 32 NHL teams.

Have a look below:

You could argue that several players could be an X-Factor for the Bs, but Pastrnak is a perfect choice for his elite scoring ability. The winger can score multiple goals on any given night and that and his shot is what makes him so dangerous.