The wiki is still filling in this guide, so it may be short or missing steps. You can add what you know there.
The Rug Pull is a one time in-game activity and sequel to X Marks The Spot, where you have to find dead bodies around the the region of Umbral Sands to uncover hidden rewards. Players will have to discover four diaries belonging to four brothers to uncover what happened with the loot they made off with. This will reward players with new rug furniture recipes, but in order to start this trail, players will have to have fully completed Black Knight's Fortress and partially started Icthlarin's Little Helper to access the region of Umbral Sands.
This guide is the wiki's The Rug Pull article, by its editors, reformatted for this site. Licensed CC BY-NC-SA 3.0.