As of 4.0 update, hovering over ninja's icon in ninja list shows not only his abilities, but also displays a short summary of debuffs the ninja is capable of causing.

It makes this guide partly useless, mainly for the descriptions part, which annoys me a bit tbh xD However, it's good to have some confirmation that data in this guide is correct. There are some things wrong with them though, namely: Poison doesn't say it can stack. Slow doesn't say it slows down a cast of mystery skills as well. Immobile and Chaos doesn't say they prevent chase skills.

(Tag still says it reduces def and res by 30%, while, as posted in comment #3, testing has shown the debuff causing only 10% def and res reduce...) - this might be my mistake, as pointed in comment #26 by Masurao, so I will further refrain from using the "reduced def and res" and instead use "increased damage suffered".

I don't see how that would be possible, but since we don't know the exact formula for calculating damage in NO, let's just say that it increases damage by 10%... We can agree on that, right?