Where to learn TBC dark cloak?

The enchantment of TBC's dark cloak is not learned. Is to kill monsters and fall. Netherstorm's ethereal scream must be killed. Details are as follows:

Tools/Materials: Dell Game Box G 15, win 10, Warcraft 2.4.3.

1. First, the player needs to come to the outland map, as shown in the figure below.

2. Then fly to netherstorm, as shown in the figure below.

3. In the area below netherstorm, there are several refresh positions.

4. Whoever kills netherstorm's screaming will have the opportunity to drop the enchanted cloak-a powerful shadow resistance.