Completing the Reclaiming Gilneas questline as a Worgen character allows you to loot a special toy Tess's Peacebloom. This item is a teleportation back to Gilneas that only Worgens can use.
Worgen players can loot the item at Liam Graymane's grave after completing the quest What We Left Behind, it is a flower on the grave. Thanks Weran for finding it.
Other Reclaiming Gilneas Rewards