I've been making mad bank off of Nihils and I figured I'd do a guide on them. I tried to be as in depth as possible, so it may seem a little long. Use the buttons at the top of the screen to skip the whatever part you want to view. I hope this guide helps you out, if it does let me know!
Weapon Poison++ is extremely potent at Nihils. It deals around 4-500 damage per tick and lasts 10 minutes per does. It speeds up your kills, ensuring that they'll never be able to use a special attack. I don't have a comparison of killing with and without weapon poison, but trust me, the stuff is legit.
The reason you kill Smoke Nihils is this: Their special is negated by Overloads and as such they are the easiest to kill. Blood Nihils have high HP and will heal if they use their special. Ice Nihils drain prayer with every attack and will stun you with their special. Shadow Nihils summon a damaging shadow circle at your location. You can tell a Nihil is going to use its special when they hiss, this means you have a few seconds until the special activates.
Fate of the Gods Requirements: http://runescape.wikia.com/wiki/Fate_...
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