This arcane puzzle box is a cube-shaped container 5 to 6 inches on a side, composed of airtight, interlocking parts. The empty box weighs 3 pounds.
When an object small enough to fit inside the box is placed in it, the container magically seals shut around the object, and no magic can force the box open. The sealed box becomes immune to all damage as well. The box is constructed with a unique means of opening it. The trick to solving the puzzle is mundane, not magical. Once a creature figures out the trick to opening the box, that creature can open it as an action, allowing access to its contents.
A creature that spends 1 hour holding the box while trying to open it can make a DC 20 Intelligence (Investigation) check. If the check succeeds, the creature figures out the trick to opening the box. If the check fails by 5 or more, the creature must make a DC 12 Wisdom saving throw, taking 8d6 Psychic damage on a failed save, or half as much damage on a successful one.
Comments