Rextroy One-Shots: Remnant of Ner'zhul Bites the Dust

wowhead.com:

Rextroy finds a tiny bug in a Covenant Legendary that, with a little prep work, can actually one-shot a current raid boss. Check this out.

It is a bug with Insatiable Hunger, the Venthyr legendary for Death Knights This legendary makes your Swarming Mist explode at the end for damage that depends on how much runic power you spent while it was active. A thing I discovered after playing around with it is that if you remove the legendary before Swarming Mist expires, the explosion never happens, but you will keep the damage buff on the ability.

This means you can stack up the damage, and delay the explosion until you want it to go off! I wanted to do it against a raid boss, but it would take a very long time to stack it up (8-10 hours) even if I used benefits such as the Overflowing Chalice. I ultimately decided to go for it, and went into Proving Grounds since it is the perfect location where I can be alone so no one interferes.

I can also reset all my cooldowns on demand, which speeds up the process considerably! I had a specific haste set to stack it up as efficiently as possible against the bronze DPS challenge. The time I stacked was about 5-6 hours total.

It was quite horrifying since a single mistake of being being too slow to unequip the legendary, or server lag, or random stuck in combat bug, would make it explode and all progress would be lost! I had some additional DMG modifiers such as Fatal Flaw that I played around with, but ultimately I didn't need them since the DMG was 25% overkill. I had some friends join me to help with the trash mobs! I also had them battle the boss,.