Wisp in a Bottle

The Wisp in a Bottle is an item used to summon a light-providing "wisp" that follows the player. It serves the same purpose as the Shadow Orb or the Fairy Bell, but the Wisp keeps pace with the player and actually moves ahead in accordance with the direction keys the player is pressing. The Wisp in a Bottle is a rare drop from Blue Armored Bones, Hell Armored Bones, and Rusty Armored Bones.

It cannot be used together with the Shadow Orb or the Fairy Bell, and summoning either will dismiss the other. It cannot be Reforged.

Tips

 * Grappling a block will allow you to direct the Wisp without moving your character.
 * Since the Wisp will always try to stay above (or in the case of pressing a movement key, ahead of) you, the light will always be in the wall when mining horizontal shafts & when digging upward. In this case, the Fairy Bell is more effective for lighting when digging. On the other hand, the Wisp's movement capability can be useful for finding natural openings when mining underground.

Trivia

 * The Wisp in a Bottle might be a reference to the series The Legend of Zelda, particularly Ocarina of Time when Link is adult, where you can capture ghosts with empty bottles and sell them or use them later.
 * Wisp may refer to Will-O'-the-Wisps, mythological creatures that lead travelers to their death in swamps.
 * Unlike other summonable light sources, when summoned, the Wisp in a Bottle initiates the same sound effect as eating a mushroom or a goldfish.