Infernal Puzzle Box
The cube of interlocking pieces Thurstwell Vanthampur clutched in his bed, which held Thavius Kreeg's nine-plate contract with Zariel. Sylvira Savikas opened it with a flask of liquid that crawled over the box and clicked it open. See Mission 6 - Journey to Candlekeep.
[!example]- Mechanics (Descent into Avernus)
Wondrous item, uncommon. A cube 5–6 inches on a side, airtight and made of interlocking parts. Anything small enough to fit is magically sealed inside, and the sealed box is immune to all damage. Each box has a unique, mundane trick for opening it. A creature that spends 1 hour trying can make a DC 30 Intelligence (Investigation) check to work out the trick. If it fails by 5 or more, the creature must make a DC 18 Wisdom save or take 42 (12d6) psychic damage (half on a success). Empty weight: 3 lb. Source: Baldur's Gate: Descent into Avernus, appendix C.
#item #contract