Scrapped From Diablo 3 Because It "Was Not Fun," This Blizzard Mechanic Created World of Warcraft's Iconic Ahn'Qiraj Sentinels
A brilliant combat concept on paper can quickly turn into a frustrating mess if a game's pacing leaves players no room to read it. Former Blizzard game director and technical designer Wyatt Cheng has shared the story behind one of the studio's smartest cross-franchise design rescues: how an enemy prototype scrapped from Diablo III in 2004 because it "was not fun" went on to become the notorious Anubisath Sentinels inside the Temple of Ahn'Qiraj (AQ40) raid in World of Warcraft.
Why "Set Monster Packs" Flopped at Blizzard North in 2004
In a design retrospective posted on his Instagram account (@candlesan), Wyatt Cheng looked back at 2004, when he was working at Blizzard North on an early iteration of Diablo III. At the time, the development team wanted to shake up elite encounters by applying the logic of green Set Items directly to enemy groups.
Internally dubbed "Set Monster Packs," the prototype linked four monsters together in an escalating power loop. "Maybe a set monster pack is four enemies with one ability each, and each monster would grant its ability to the other three upon death," Cheng explained. "We prototyped it internally. It was not fun."
The mechanic clashed head-on with the core rhythm of an action-RPG. In Diablo, players optimize for screen-clearing speed, area-of-effect damage, and rapid loot drops rather than pausing to inspect individual monster buffs. Because players were mowing through dozens of creatures per second, the ability transfers went completely unnoticed until the final surviving monster suddenly obliterated the hero with four stacked powers.
From the Diablo 3 Cutting Room Floor to the Temple of Ahn'Qiraj
When early work on Diablo III at Blizzard North was temporarily put on ice ahead of the studio's 2005 restructuring, Wyatt Cheng was transferred to the main World of Warcraft team to help build boss and raid encounters. Assigned to Patch 1.9's massive 40-player raid, the Temple of Ahn'Qiraj (AQ40), he dusted off his discarded Set Monster Pack prototype to create the towering Anubisath Sentinels.
Moving the mechanic from a frantic isometric hack-and-slash into a structured MMORPG raid environment transformed it overnight. "Every single reason set monsters failed in Diablo was solved right here," Cheng noted.
Detect Magic, Eight-Ability RNG, and Tactical Kill Orders
Unlike solo ARPG speed-farming, 40-player raid progression demands deliberate pacing, voice coordination, and strict target assignment. Before pulling a pack of four linked Anubisath giants in the corridors leading to C'Thun, guilds had to stop and scout the encounter.
To prevent raiders from relying on a static script, Cheng engineered each Sentinel to randomly draw one ability from a pool of eight to nine powers upon spawning, including Mortal Strike, Shadow Storm, Thorns, Mana Burn, Thunderclap, Mending, and Knock Away. Whenever one Sentinel fell, it transferred its specific ability to its surviving brothers while healing them for 50% of their maximum health.
- Pre-Pull Reconnaissance: Raid Mages had to cast Detect Magic on all four colossi to identify which hidden buff each Sentinel carried.
- On-the-Fly Target Priority: Raid leaders had seconds to assign skull and cross markers. Guilds typically burned down Sentinels carrying Mending or Mana Burn first, while saving dangerous traits like Mortal Strike or Thorns for the very last target so melee DPS and tanks wouldn't get shredded by three buffed giants at once.
A Lasting Legacy Across Warcraft and Diablo
When the Gates of Ahn'Qiraj opened in January 2006, the Anubisath Sentinels became an instant benchmark for tactical trash design in Azeroth, a world that continues to expand across new formats today with the release of Dungeons & Dragons World of Warcraft and its 11 species and 7 dungeons. Blizzard later refined the exact same power-sharing and full-heal-on-death concept into a centerpiece boss encounter in Wrath of the Lich King: Ulduar's Assembly of Iron (Steelbreaker, Runemaster Molgeim, and Stormcaller Brundir), where the kill order directly dictated the fight's Hard Mode difficulty and loot table.
Years later, the mechanic echoed again through the Bolstering affix in World of Warcraft Mythic+ dungeons, and eventually came full circle in the shipped version of Diablo III through the streamlined Avenger elite affix, which visibly enlarges surviving champions and boosts their damage each time a pack member dies.
My Take
Anyone who raided AQ40 in Vanilla or during the WoW Classic gates event remembers the tension of pulling those Anubisath packs right before Twin Emperors and C'Thun. They remain some of the smartest "trash mobs" ever put into an MMORPG because they made autopilot impossible: Mages had to call out Detect Magic results over voice chat, and tanks had to immediately peel the Shadow Storm or Mortal Strike giant away from the raid. Wyatt Cheng's throwback is a masterclass reminder that mechanics aren't inherently good or bad in a vacuum. Everything comes down to how much time a genre gives a player's brain to read the screen.
SEO consultant for over 20 years and digital entrepreneur, Charles "Grimtag" is the founder of Pro-Gamer.gg, Retrocharting.com, and Gamescharting.com. A competitive gamer, streamer, and retro game collector, he has worked in the video game industry for over 15 years, notably as a consultant for leading game price comparison platforms. Passionate about real-time performance data and gaming technology, he analyzes competitive esports, gaming hardware benchmarks, and creator workflows on Pro-Gamer.gg with an authentic player perspective.
