over 2 years ago - HelpfulWalrus - Direct link

Your friend got a very lucky roll!

“Luck” of the general type (as opposed to the types of Gathering Luck that you see on something like a sickle or a food buff) affects your chances to roll “higher” on our lists of items that come from enemies and containers like stockpiles. In the case of furniture schematics and found furniture items, the higher-end storage items are among the most rare. Increasing your Luck will definitely make this more likely to occur, but as with all luck - there’s no guarantee you’ll get it.

Good luck, and happy hunting!
-HW