Guild Raid Zone. Enter from door near Guild registar in East Freeport or Qeynos Capitol District from Royal Accountant Fowler. Recomended that all raiders (from evil or good side) be in either EF or QH when zone is entered. If you do have both good and evil characters doing this quest for the guild, make sure that the good characters get the quest from QH and the evil get the quest from EF before zoning in. There is a 3 day 20 hour lock out on the zone.
Quest: Kill High Shaman Vascha
Tactics: After killing all the trash, take down the gnolls in the druid ring. Then kill the large encounter of gnolls inside the ring. After that, the High Priest will summon an elemental to attack you (random; seen earth, fire, water and air). Immediately after killing the elemental the High Priest becomes killable. He doesn't have any special tactics, but will spawn about 2-3 Heroic mobs every 20s or so. A good tactic is to have everyone focus on taking down the main boss as fast as possible, with the tanks sending out AoEs to bring down the adds. Best to clump together so no one is sitting with an add out of range of the tank's AEs.
Boss Specifics: High Shaman Vascha is a healer, most likely defiler script. Mostly (75%) crushing melee, a couple disease spells (damage and debuff). Doesn't use wards, only direct heals.
Reward: 1 Chest, only seen 1 armor out of it but possible potential for 2.