The hot-scoring Avalanche could probably cover this total just by themselves. Colorado has averaged five goals in each of the first three games of this series in building a 3-0 series lead. Colorado is averaging more than five goals a game during their last five games.
 
The Over is 11-2 the past 13 times the Avalanche have been favored in a playoff game. 

The Avalanche scored five goals this past Friday despite star player Nathan MacKinnon being held scoreless. MacKinnon had accounted for five goals and two assists during the first two games of the series. The Avalanche could be especially deadly given that the Blues may be down three defensemen as Justin Falk, Vince Dunn and Robert Bortuzzo are all questionable-to-doubtful to play because of injuries.

The Blues know they can't pull the upset by being in a defensive shell. They fired 32 shots in Game 3 and I expect them to be going all out in their attacks to avoid a home loss and worse, getting swept.