Toronto — Benoit Cheyrou and Tosaint Ricketts scored 2 minutes apart in extra time and Toronto FC advanced to the MLS Cup final, outlasting the Montreal Impact 5-2 in the rain Wednesday night for a 7-5 aggregate victory.

It took extra time and 12 goals to decide the two-leg Eastern Conference final. Toronto will host the Seattle Sounders on Dec. 10 in the MLS championship game, becoming the first Canadian team to play for the title.

Toronto trailed 3-2 after Game 1 in Montreal and fell further behind after the Impact scored first before a BMO Field-record crowd of 36,000.

Only once before in MLS playoff history had a club trailed by as many as three goals in a two-leg aggregate series and come back to wine. The San Jose Earthquakes were down 4-0 in 2003 before rallying to beat the Los Angeles Galaxy 5-4.

With the teams tied 5-5 on aggregate, Cheyrou scored on a header in the 98th minute — just a minute after entering the game — when he knocked in Steven Beitashour's cross. Then, Jozy Altidore outmuscled a couple of defenders to send in a cross that Ricketts, beating two more defenders to the ball, swept in.

Dominic Oduro opened the scoring in the 24th minute for Montreal, a goal that meant Toronto had to score twice. Armando Cooper and Altidore did just that before the first half was over, tying the aggregate score at 4-4, with an away goals edge to Toronto.

But the Impact's Ignacio Piatti made it 2-2 — and 5-4 on aggregate — in the 53rd minute after substitute Johan Venegas found him behind the defense. The ball bounced off either Piatti or defender Nick Hagglund, leaving Toronto fans to watch in pain as it trickled slowly into the net.

Hagglund restored order with a superb header in the 68th minute to make it 3-2 on the night and 5-5 on aggregate. It came off a short corner with Justin Morrow delivering the cross.