Ok, put it this way...
we were bloody branching at morocc, and summoned Gloom Under Night. Knowing I couldn't hurt it, I quickly threw down Volcanic ash just as it spawned and ran, only to realize soon after that it was mob-bugged by Volcanic ash. It just stopped moving, stopped using skills, and did nothing but stand there and let us kill it. Everyone literally just sat down and camped out while the ranger and RK had their fun.
This is certainly an issue that needs to be fixed, but it sure is amusing. The same thing happened to Evil Snake Lord at our last E.T. run, and Ktullanux from the BB party before that. Now I just make sure to try to throw down volcanic ash whenever we MVP. The MS Sura never really cares about Ash status.
My theory is that the AoE of volcanic ash works a bit like Sorcerer's Blinding Mist. Enemies who try to pass through from one corner to the other seem to lose sight of their target, except in VA's case, it bugs them and stops them from reacting to anything. Either that, or it cancels their attempt to summon a mob, which crashes the monster AI?
Everyone in the party pretty much agreed that it was the stupidest thing we'd ever seen, lol.
Edited by Luckywhiterabbit, 22 May 2012 - 07:08 AM.