Use the Bloodgem at the Xass Barrows Altar to raise the dead.
These gems are powerful tools for change. They are the blood of Vakgarr himself, sealed in heartglass, and grant their possessor power over death itself.
Before the Great Silence, even death could not prevent the chosen from serving in the Temples. It was not uncommon to see hundreds, or even thousands of skeletal servants performing manual labor.
The Great Silence changed that, but now it is time to change once again.
We have sent many Odium into the nearby Barrows to raise us an army of skeletal servants, but they have only succeeded in getting themselves killed.
Perhaps you will succeed in a different way.
You will need a bloodgem to raise the dead.
As you hold the bloodgem to the altar the quite hum becomes an ear-piercing scream...
Something is not right.