Becoming Part 1- The amulet begins to move again
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.
Small, but powerful, the Horngazel allows the bearer to open a portal under the Arcadia Bridge that connects to Heartstone Trollmarket.
The Art of Trollhunters

Horngazels are magical keys that are used to open the entrance to Heartstone Trollmarket and its hidden chambers.

It is vital to not let a Horngazel slip into the hands of the enemy, or they could easily get into Trollmarket and attack, as Angor Rot did in "Something Rotten This Way Comes".


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.

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