How to do arcane interference task in World of Warcraft Raiders

1. After entering the game, talk to the exorcist Otto Ruth in the headwind path and accept the arcane interference task.

2. Go to the wine cellar.

3. Use the violet divination crystal in the backpack in the deepest pool of the wine cellar.

4. Go to another wine cellar.

5. Use the violet divination crystal in the backpack on the right hand side of the wine cellar.

6. After you finish, you can go back to Otto Russ and the exorcist will finish the task.