Black Chest
From the Super Mario Wiki
Black Chests each contain one of the heroes that helped to defeat the Shadow Queen 1000 years ago in Paper Mario: The Thousand-Year Door. There are four Black Chests in total. The heroes are now Black Chest Demons and curse Mario when opened. The "curses" are actually helpful abilities that allow Mario to access new areas. The Chests are located in Hooktail Castle, Rogueport Sewers, Twilight Trail, and Pirate's Grotto. Mario can open the chests with Black Keys.
The chests are in the spot where the heroes left their Crystal Stars, since letting go of a star would trap each of them in a chest. They look like black Treasure Chests.
| Artifacts |
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| Artifact | Balance Stone | Beanstar | Black Chest | Black Skull | Chaos Heart | Chomp Rock | Cobalt Star | Crystal Ball | Crystal Stars | Diamond Stone | Form Baton | Grand Star | Green Power Star | Jade Raven | Lost Mushroom | Lunar Stone | Magic Scepter | Magical Map | Marvelous Compass | Moon Stone | Music Key | Power Star | Pulse Stone | Pure Heart | Pyramid Stone | Red Power Star | Sacred Cylinder of Cheese | Shadow Star | Shine Sprite | Silver Star | Skull Gem | Star | Star Piece | Star Rod | Sun Stone | Treasures | Vibe Scepter | Volcano Vase |
