The fact that it's a slap pass works three-fold: it conceals his intention, creates an immediate threat on goal that needs to be respected, and it ensures that no matter what he opts for, it will happen with enough velocity that it will be impossible to intercept on reaction.
The real conundrum for goalies is that the way Mitch sells it, when his stick reaches the apex of the windup, your attention has to be divided into three distinct quadrants of the ice immediately. Mitch's half-board position for the short or far side slapshot. Front of net for Tavares deflection/pass. Cross ice to Matthews. Either of the latter options are a goalie's worst nightmare, but the frequency he puts it on net here with impressive precision means they cannot cheat, even a little bit. That's a lot to think about in a fraction of a second. Not just for the goalie, but the defence as a whole. I'm convinced even Marner doesn't know where it's going until the last possible second.
Less likely but also possibilities from this position are the slap pass/deflection in the high slot to Kadri (which works best infrequently as it's not even on the goalie's radar when it happens), and the fake shot behind the back pass to Reilly which doesn't pose as immediate a threat to the net, but it throws defenders for a loop and opens up a lot of ice.
How do you defend against this position? Is there an answer to it? I don't see it. Pretty brilliant, but obviously requires the talent we have to make it so effective, like you said.
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