Investigate Shroud Hearth Barrow is a miscellaneous objective given to you by the proprietor of the Vilemyr Inn in Ivarstead. Head to the Shroud Hearth Barrow on the edge of the town and go inside. Inside the barrow you will find a closed gate. To get both gates raised, the correct lever configuration, from left to right, is: up, down, up, up. Once you're through the previously lowered gate, there's a locked door on the right.
I do not believe we should ever allow it to be used. Shade Form is affected by support gems socketed in that body armour, regardless of whether the gem sockets are linked. Once this gem reaches level 2 or above, will raise the level of supported gems.