WoW Summer Challenge: Karazhan

Every week this summer, we’re challenging you to get together with a few friends to explore a part of Azeroth that you may not have seen in a while, or perform a feat that you may have never done. We’re calling them World of Warcraft Summer Challenges, and we’re going to be playing along with you as we hunt down rare achievements, get screenshots of amazing bosses, and try to find some rare gear for our transmogrification sets.
This week’s challenge is: Karazhan.
Medivh, the Last Guardian, made his home in Deadwind Pass, in the bright tower of Karazhan. Though he was the greatest wizard of his day (and humanity's intended custodian) Medivh was secretly possessed by the dark spirit of Sargeras, the Destroyer of Worlds. Through Medivh, Sargeras opened the Dark Portal and allowed the orcs to wage war upon the kingdoms of Azeroth.

Originally opened for raids of 10 players at level 70, Karazhan is teeming with a dozen bosses, many with unique events, ending with Prince Malchezaar. There are a number of reasons to explore Azeroth's original haunted castle.
Notable achievements
- Karazhan -- Defeat Prince Malchezaar
- Karazhan Guild Run -- Defeat Prince Malchezaar while in a guild group of at least 8 people
- Outland Raider -- Complete this and the other seven Burning Crusade raids.
- Fiery Warhorse's Reins (feat of strength) -- Obtain this mount from Attumen the Huntsman
Desirable gear
- Arcanist Regalia
- Bold Armor
- Beast Lord Mail
- Bloodfang Armor
- Righteous Armor
- Aldor Regalia
- Big Bad Wolf's Paw
- King's Defender
- Sunfury Bow of the Phoenix
- Steelhawk Crossbow
- Legacy
- Despair
Other odds and ends
- Some bosses in this dungeon drop rare Enchanting Formulas: Enchant Weapon - Mongoose (Moroes), Enchant Weapon - Sunfire (Shade of Aran), and Enchant Weapon - Soulfrost (Terestian Illhoof).
- The rare Engineering Schematic - Stabilized Eternium Scope has a chance to drop when you kill Attumen the Huntsman here.
- Players seeking The Violet Eye reputation will want to kill everything in the zone, and complete the epic questline that starts with Arcane Disturbances or Restless Activity
As the war progressed, Medivh fought against Sargeras' control. The raging conflict within him finally drove the wizard irrevocably insane, until his childhood friend, Anduin Lothar, aided Medivh's young apprentice, Khadgar in storming Karazhan and slaying their former comrade. Since that day, a terrible curse has pervaded both the tower and the lands around it - casting a dark pall over Deadwind Pass and the region that is now known as Duskwood.

Please join us in this discussion thread, where we’re talking about this week’s challenge, and looking forward to your stories about how it went for you this week, your screenshots, and your suggestions for other fun reasons to take on Karazhan

Blade's Edge
Ravencrest
Argent Dawn
Aggramar
Vek'nilash
Grim Batol
Bronze Dragonflight
Arathor
Xavius
I hope a few newer folks will decide to explore it this week!
Bloodscalp
Doomhammer
Aerie Peak
Nagrand
Aerie Peak
Terokkar
Mazrigos
Shadowsong
Darkmoon Faire
Ragnaros
Ravencrest
Aerie Peak
The Venture Co
Personally, I think going to explore places like this just adds more depth to the game; especially if it's content not many people will visit nowadays (besides for the mount).
Sylvanas
Kazzak
Argent Dawn
Arathor
Ragnaros
Hellfire
Stormrage
seriously blizz, 'summer challenge'... dont know what to say tbh. ill just tell my 7year old nephew about this challenge, maybe hes interrested.
Auchindoun
Earthen Ring
Darkmoon Faire
Chamber of Aspects
Zarni out!
Ghostlands
Darksorrow
Spent five hours wiping and killing, but man was it fun.
Azuremyst
Aggra (Português)
Moonglade
Ravencrest
The Sha'tar