Alicorn Amulet

Alicorn Amulet, referred to as the Alicorn Amulet, or just Amulet, is an amulet that gives its wearer supernatural powers. However, it's limited. It can't make ponies look sad, duplicate, or make one pony play ten instruments.

History
It is not known who invented the Alicorn Amulet. However, in the beginning of "Magic Duel", it is shown that a shopowner has the Alicorn Amulet, but refuses to give it away.

Trixie possesses it later on and is corrupted by the Alicorn Amulet.

Trivia

 * At the end of the episode, Rainbow Dash says to return it to the owner, and she puts it into Zecora's box. This might be because Zecora owns the Amulet, but the Shopowner took it.