Calamity's Vanities/Clam Hermit Medallion

The Clam Hermit Medallion is a pet summoning item dropped by Giant Clams. It summons a small Clam Hermit to follow the player. If the player stands still for long enough, the Clam Hermit will begin dancing until the player moves.

Trivia

 * The pet is a reference to the Snail Shaman from the game Hollow Knight.