Mounts

 Path of Fire

The springer is unlocked at the Highjump Ranch in Stampede Uplands in the northern part of Desert Highlands. To get there, follow the cliffs northwest until you reach the Highjump Gap point of interest located west of Auburn Hills. The Raptor's Canyon Jumping mastery is required to cross the canyon.

It is possible to reach this area through many other means; nevertheless, the required heart Help out around Highjump Ranch will not show up until you have trained the Canyon Jumping mastery.

Completing the Renown Heart allows you to unlock the mount by purchasing the Springer item from Stablemaster Unja for 50 Trade Contracts and 1 Gold coin.

nd of Dragons

In Guild Wars 2: End of Dragons, the Springer can be acquired by talking to Lieutenant Zhao in Grub Lane in New Kaineng City. After exiting the dialogue the Springer will be unlocked free of charge. Note that this will not unlock the mastery track and you'll still have to purchase it in Path of Fire.