Infernal Puzzle Box - 347

They were made from connected material sourced from the Nine Hells, often infernal iron but they could also be found crafted from bone. Each side of the box was usually about 6 in (15 cm) wide.

Their most common use was to protect contracts signed between a devil and a mortal creature. They could also be used to safeguard small items. When an item was placed inside the box, it sealed itself automatically, creating a magical seal that was impenetrable. This magical seal also gave the box immunity to all damage. The weight of the box never changed, no matter how heavy an object placed inside it was. Once sealed, the only way to open a box was to successfully solve its puzzle. Each box's puzzle was unique and could only be solved without using magical abilities or spells. If a creature failed to solve the puzzle, they were struck by a painful psychic-based attack

Mechanics & Inner Workings

Although the box itself is a 6" cube, it is able to hold a substantial amount of volume. The box is able to hold 6 cubic feet of materials.

Effect: A creature that spends 1 hour holding an infernal puzzle box while trying to open it can make a DC 35 Intelligence (Investigation) check. If the check succeeds, the creature figures out the trick or sequence of steps needed to open the box; this one and only time. If the box is ever closed, another check by anyone other than the person closing the box will be needed. If the check fails by 5 or more, the creature must make a DC 18 Wisdom saving throw, taking 42 (12d6) psychic damage on a failed save, or half as much damage on a successful one.

Item type

Magical

Rarity

Only 666 boxes are known to be in creation, each one created by Asmodeous himself.

Weight

6lbs

Dimensions

6"x6"x6" Cube

Base Price

Untold