Griftah's Authentic Troll Shoes

Griftah's Authentic Troll Shoes are a cosmetic foot armor skin (making any foot armor transmogrified into them invisible) previously available through the Battlefield: Barrens world event, and now sold by Ravika. Though Griftah was presumably involved in their "creation", he does not sell them in his shop in Shattrath.

Source
This item is purchased from Ravika in Durotar for during the quest Legion: The Legion Returns (Horde). After that quest, she can be found on the Echo Isles in Durotar with the same inventory.

During the Battlefield: Barrens world event it was sold for 500 Kor'kron Lumber.