You should tell that to @
Ersula, he is the one who picked a post I made like 3 days ago and started saying false things about the Ren'dorei (like how the Ren'dorei are mad and corrupted, which completely defies Canon).
I never start discussions about the Ren'dorei, I always jump in already ongoing discussions.
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Shadow Priests are not infused with the Void at a cellular level. Comparing a Shadow Priest to a Void elf is like comparing a Warlock to a Felblood elf or a Demon.
Shadow Priests are still normal people, who happened to be using the Void as some kind of temporary power-up; the Ren'dorei instead are people who have literally been changed and transformed at a molecular level by the Void.
As such, Shadow Priests never defied the Void in the same way that the Ren'dorei do.