The Leafs/Habs/Sens rookie tournament is this weekend. It opens on Friday night with a game we don’t care about between those other two teams, and it ends on Monday with an extra non-public game between the Leafs and the Canadiens rookies.
In between, on Saturday and Sunday at 3 p.m. are the public Leafs games against the Senators and the Canadiens.
If you do want to go to Laval and buy tickets (they seem quite reasonable, given the prices they used to charge in London), you can find the information here.