Forest Amulet

The Forest Amulet, also known as the Magic Amulet or just amulet, is a necklace with just enough magic to transform the wearer into one of three creatures of the magical realm: A troll, a goblin, or a dryad.

Trivia
The Troll form has the head of the Troll members only item.

The Dryrad form has the Queen Elf's wings.

The Goblin form has a similar Hat like the other Goblins.

It doesn't work on any other islands.