This course is used to improve the sanctified sword and unlock the first skill. We tell you where to find it.
It’s as simple as that. Go out of the Tower of Folgrim through the door, enter the cave opposite and kill Grisha. This is an optional boss, although without its destruction will be difficult to search the chest. And, as you’ve already guessed, you’ll have to take the thorn from the chest. Then go back to the workbench in the tower and place the object in the consecrated sword. You have the first skill available!