Kicking butt! Awesome!! I think the hide phases are at 70 and 40. If you are in a big group with a lot of DPS you can burn through those points BUT I noticed that once the hide phase ended and we went back to work on him that his health was back at 70% and 40%. I ran Deadly with Order's Wrath and I forget which one piece Monster set but iirc it was one that gives me more penetration instead of crit.
yeah, i've done a bunch more in 3-man, and got a much better handle on the various phases and mechanics now, it's a very smooth fight with a few people that know what they're doing, gotten busts for 2 of our group so far
if it's just one scarecrow, the passive recovery takes care of it. More than one and you can see it start draining. I am also not really casting many resource-using skills, because it's a Heavy Attack build.