Control the power of death over life
You've given up all that is good and right as a priest and instead have chose to focus on the power of death. Good for you, we all need to be bad every once in a while.
While playing a healer can be immensely rewarding, it can also be incredibly demanding and stressful. Due to this, many priests have switched allegiances from light to dark, and now focus on the power of death. Many never even need to switch, as shadow is the strongest solo build and therefore the most common while leveling. Once you become a shadow priest many players find it hard to go back. DPS is in general easier and less stressful than healing, and much more addictive. It can become very competitive when trying to top the DPS meters, which is very different than healing.
You can find the full guide here: How to play a shadow priest and comment on it in our forums here.
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