Ednör – L'Attaque, Steel inverted roller coaster at La Ronde, Canada

Ednör – L'Attaque is a Vekoma Suspended Looping Coaster at La Ronde, with a 689-meter track, a 33-meter lift hill and an 85-foot drop to the surface of Lac des Dauphins. Its roll-over element inverts riders twice and is shaped like a heart, followed by a Sidewinder and a double inline twist.

The coaster was originally called Serial Thriller and operated at Six Flags AstroWorld until 2005. It was relocated to Montreal and reopened at La Ronde in 2010 under its current name.

The name Ednör is "Ronde" spelled backward, and the ride is themed around a fictional Norwegian sea monster said to have escaped from Lac des Dauphins during excavation. The queue is built as a sea-monster study centre with a pre-show on Champ, Ponik and the Loch Ness Monster. Two geysers once sprayed riders to suggest the creature's shape; they were removed in the 2019 season.

The queue is built as a sea-monster study centre with a pre-show on creatures such as Champ, Ponik and the Loch Ness Monster. Two trains of ten cars carry 20 riders each, seated two abreast. The lift hill and first drop stand over the water of Lac des Dauphins, so the front rows give the closest view of the lake surface.

The name Ednör is "Ronde" spelled backward, chosen when the ride was renamed at La Ronde in April 2010. The queue is built as a sea-monster study centre, with a pre-show on creatures such as Champ, Ponik and the Loch Ness Monster. Two geysers once sprayed riders to suggest the monster's shape; they were removed in the 2019 season.