The Spengler Cup is an invitational tournament hosted by the Swiss league’s HC Davos every year from December 26th to December 31st. This year is the 90th edition of the tournament, and you can ready a history of the Spengler Cup here.
The teams that have been invited this year are:
Mountfield HK - Czech Extraliga
HK Dinamo Minsk - KHL
Avtomobilist Yekaterinburg - KHL
HC Lugano - NLA (Switzerland)
Team Canada
The Team Canada that plays in the Spengler Cup is usually made up of Canadians playing in Europe, or NHLers who do not have current deals.