Once erected, this trap releases waves of flame that incinerate any opponents within its path.
Wake of Fire blankets a relatively small area (~10-15m) in rapid waves of fire. It only fires 5 times as opposed to the 10 times that lightning sentry fires. This means that it needs to be laid more often, which can be difficult for some builds.
Wake of fire is especially good in PvP when used in conjunction with Mind Blast to pin down an opponent. It is ideal both because it is very rapid attack to trigger the fhr animation, and because it covers an area almost completely so that escape is difficult.
Fire trap builds often use this as their primary trap instead of Wake of Inferno due to the latter's limitations vs moving targets.