Board Thread:Suggestions forum/@comment-26119768-20161127052246

When the Nazgul are added, there will be fools in Middle-Earth who would endeavor to hunt them down. Those fools will not return alive, for the Nine bear weapons of great power.

The Knives
Nazgul will use Morgul-knives as their primary weapon. These will be uncraftable. When hit with a blade, two things will happen. One, the Ringwraith that hit you will drop a Morgul-knife hilt and switch to its sword. Two, you are screwed, as there's a 70% chance that you've been inflicted with what I'll call the 'Black Mist' effect. More on that later. The knife hilt is mostly useless, unless a purpose in major quests is found. It would make a cool reminder of how you died though.

Black Mist
This effect is invisible, which means there is no indicator in your inventory screen. When inflicted with this effect, a timer will start counting down, set for 10-15 in game days. This timer is not reset by death. The more immediate result of being hit is that a shader/filter is applied to your view. Saturation of colors is decreased slightly, and a slight debuff to swing and mining speed is applied. Around 25% through the time you have, the saturation decreases further, and during the night shadows appear on your screen. These shadows can't be interacted with, and are a visual effects only. At 50% time left, saturation decreases even further, and the swing/mine speed debuff increases to a more noticeable amount. Elves also have a white aura about them, and Nazgul are revealed in their ethereal form. At 75% of your time gone, a slowness effect is applied to you when Nazgul are within 60 blocks of you, and the world is almost completely black, white, and grey. Onece the time is 100% gone, you are set in a sort of adventure mode, unable to break blocks, and you slowly wither away. You die, and finally you are free of this effect.

Prevention and Curing
The best way to fight the black mist is to stay the heck away from the Nazgul. Failing that, once afflicted you can drink either Athelas brew or the weaker Athelas tea, which is crafted with 1 athelas plant and a container of water. Both will push back the timer by a day or so. However, there are diminishing returns. The more you drink, the less it helps, and the further along the effect is, the less effective athelas is. As far as curing goes, you would either have to go to Elrond when he's added, or to a 'elven healer' of some sort. They would remove the effect (perhaps demanding payment after. Could debt repayment become a new type of mini-quest?).

Anyways, thats my take on one of the weapons of the Nine. Perhaps my idea is impractical, but I think it would be cool. Please feel free to criticize or suggest. 