The Tampa Bay Lightning knew what they were getting when they targeted Yanni Gourde at the trade deadline. Sure, it was a slightly older version of the player that ran amuck during his first stint as a member of the team, but they knew he would be in front of the net, in the middle of scrums, and generally making life difficult for opposing teams. So far that has been the case. As for the other component of the deal, Oliver Bjorkstrand, that was more of an unknown.
Sure, they had seen first-hand what he could do against them:
The question was, what could he do FOR them.