The Western Conference semifinal is going the distance after Edmonton's decisive 7-1 victory last night.
The winner of Wednesday's Game 7 in Anaheim meets the Nashville Predators in the conference final.
Leon Draisaitl led the Oilers with a hat trick with Mark Letestu scoring twice for the hosts.
Zach Kassian also had a big goal for the Oilers as Edmonton had sprinted to a six-goal lead by the first minute of the second period before the Ducks countered with a lone goal from Rickard Rakell.