Swift Gloomhoof

Travel to Tirna Scithe in the far west of Ardenweald. Fly to Root-home and ride south, then head northwest through Darkreach. At around 19.8, 63.4, jump onto the tree root using a Goblin Glider Kit or similar ability, follow the root up to a cart, and collect the Broken Soulweb lying on the ground behind it.

After collecting the Broken Soulweb, head to Glitterfall Basin and bring 10x Lightless Silk with you to complete the Trouble at the Gormling Corral questchain, which is part of obtaining the Dream Catcher.

If you are not a Night Fae covenant member, speak with the guards outside the Heart of the Forest to request Ysera, who will come out to assist you in creating the Dream Catcher without requiring covenant prerequisites.

Head to Dreamshrine Basin, the area just outside Hibernal Hollow in Ardenweald. Use the Dream Catcher in the basin to receive a buff that transports you into a shadowy phase of the area. Night Mare will appear and is marked on the minimap as a rare. You can wait at 57.4, 50.2 in Ardenweald for Night Mare to path near you. You can reuse the Dream Catcher even in combat to refresh the buff — leaving the basin will remove the effect and expel you from the phase.

Defeat Night Mare at 57.4, 50.2 in Ardenweald to receive the Swift Gloomhoof as a guaranteed drop. Night Mare is also part of the Adventurer of Ardenweald achievement.