Phyll has asked you to check all of the light sources around Shrouded Glade to make sure they are still glowing brightly.
This is a Timed minigame, and can be started by clicking on x
|Primary: Check all of the light sources!
Click the Barrel next to Phyll to start.
You must check the lights in the order they are "breadcrumbed" to you. Click the post, not the light to get the update. You must be pretty close to them, and the generous number of speed boosts can send you right by them.