|This article contains canon information corresponding to the Tales of Arcadia franchise. That means all information in this article is true and has appeared/been validated officially on-screen.|
Horngazels are magical keys that are used to open the entrance to Heartstone Trollmarket and its hidden chambers.
Horngazels are used to draw an arch on the wall below the Arcadia bridge, a portal opens that allows one to enter or exit Trollmarket.
The Horngazel can also be used to block the portals it creates by simply creating an X over it.