I'd also say that it can be a tank's fault they die b/c of lack of cooldowns. I come from the school of thought that (obviously depending on the circumstance, but typically...) if a tank hadn't tried everything within reason to stay alive it is at least partially their fault. NBR flat out requires lots of cooldowns. I've often ended up running out of cooldowns to pop on that boss (and others).
"If the world is something you accept rather than interpret, then you're susceptible to the influence of charismatic idiots." -Neil deGrasee Tyson
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