I’m surprised you say 130 Accuracy let’s your Debuffs stick on Brutal?

My gathered information suggest you need 150 Accuracy for Debuffs to stick on Brutal.

Does any of your buffs get Resisted at all with 130?

And what Masteries do you have on your Nethril?

Player J said:

I’m surprised you say 130 Accuracy let’s your Debuffs stick on Brutal?

My gathered information suggest you need 150 Accuracy for Debuffs to stick on Brutal.

Does any of your buffs get Resisted at all with 130?

And what Masteries do you have on your Nethril?

Well, are you taking into consideration the mastery that gives you an extra +20 when no skills are on cooldown?  Since the only thing you should be using for the clan boss is A1 for Nethril's poisons, you should always have that extra +20 acc up, which would bring it to 150. 

In addition, the "150 for brutal" rule is general.  I know one guild mate that has 250 accuracy on a champion (not intentional, just a result from the gear he has on Kael) and his poisons STILL sometimes get resisted.

No matter how much accuracy you have, there is ALWAYS a chance they will be resisted.  About 150 is just a general rule of thumb, where up to 150 it's fairly feasible, but past that, you get severely diminishing returns.

Accuracy should be a priority to an extent, but also speed.  The best gear I can give Nethril for a combo of speed and accuracy has him at 130.  I sacrifieced his speed for more accuracy for a few days, but I noticed no difference on the clan boss, and a severe drop in his viability in arena.

A lot of it regretfully takes experimentation.  There may be masteries one person has that you don't, which might make you have to adjust certain stats.  The best you can do is take what other players say with a grain of salt, and test various things out on your own.  The game takes a lot of patience.

Another example... I have had a couple people say you don't need any accuracy in arena, because no one tends to have it.  However, I have had some groups where almost every single champion of theirs resists my debuffs.  And while I feel damage is paramount in arena, missing all your debuffs can make a HUGE difference too.  So again, it is about experimenting.

Yet another example...  Magmablood is a B average ranking champion.  However, I maxed out his skills way back when I first started playing, before I knew.  He is by FAR my hardest hitting champion.  Harder than Nethril, harder than Kael, harder than ANYONE, and with one AoE and a bomb debuff that ignores defense (when those things pop, people die.  End of story.).  So again, it's all about experimenting.