Originally Posted by
Raugnaut
As an added example, lets take most AoEs in Throne. Quills, Rampage, Lightning Storm, Iron Qon's Fist. Here would be a "good" situation to use Avert Harm. Now, lets assume its a 10 man, and the entire raid is stacked up for maximum redirection. All of these AoE hit party members for ~50k per tick. In a 10 man, this is 500k raid damage per second. 20% of 500k is 150k damage, taken every second. Now, 40% of this is staggered, so you are taking 90k damage per second, and 50k damage staggered per second. After the full 6 seconds, you would have taken a total of 540k damage up front (Ilvl 510 BrM monks would have about 620k hp), which leaves you with 13% of your hp. Now, you have a 300k stagger up, which you can, of course, clear right off. However, for each second that a BrM monk fails to take it off, it deals 30k damage to the monk, or about 4% of your hp per second. Most of these AoE are STILL going on, so you still have 50k damage coming in, or 8% of your hp per second. Should you fail to clear stagger ASAP, you are left with only 1% of your hp! the next second, death.
So, yea. Avert Harm is NOT a good raid cooldown by itself. For best effectiveness, it's used in conjunction with Zen Meditation or another cooldown, like Fort brew, or maybe even Guard. As stated previously, might as well make it baseline with Zen Med.
Also, don't even THINK about using it to mitigate raid damage in a 25 man- you'll drop to 10% health instantly.
---------- Post added 2013-05-27 at 06:05 AM ----------
As stated, for dps and healers. For tanks, its perfectly fine, so fine that stating its useless is the essence of ignorance.