Guild Wars 2

Trick to beating simir: High DPS, 2 experienced people lure sparks, one for each side. pull simir against the left wall (your left from entering). When she goes invis you continue to dish out the damage, because she doesnt move and still takes damage in invis mode. 3 will be DPS 2 lure, constant DPS from the 3 with fast luring and one designated de-petrifier and one backup should be enough to take this boss out without much trouble.

Still not fixed, just made a valkyrie one myself and it is an incredibly annoying bug considering the cost to make one of these.