How to Get Mimiron's Head in WoW: Solo Ulduar Route, Keeper Rules and Drop Rate

Mimiron's Head is one of the most recognizable rare mounts in World of Warcraft: a gleaming gnomish flying machine shaped like the head of the Keeper himself. It has been around since Ulduar opened in Wrath of the Lich King, and it's still a long-term farm today. The good news is that a max-level character in Midnight can solo the whole route in a short weekly run. The bad news is the drop rate.

This guide is up to date for the current version of the game (Midnight, patch 12.1.5, live since October 13, 2026).

Quick answer

In short: clear Ulduar up to Yogg-Saron, never speak to the four Keepers after you beat them, and kill Yogg-Saron alone. Repeat every week, ideally on several characters.

Do you need 10- or 25-player mode?

Older guides tell you to set the raid to 25-player, because the mount originally dropped only from the 25-player version. That changed with patch 7.3.5, when the 10- and 25-player versions of Ulduar were merged into a single legacy raid. Players on the official forums report that picking a size no longer matters – the instance simply loads as the one version that exists now. Don't waste time on the difficulty menu.

Requirements

• A max-level character. Ulduar is trivial at current levels, though one phase of Yogg-Saron still needs a little attention (see below).
• Riding skill so you can actually fly the mount once it drops.
• A free weekly lockout for Ulduar on that character.

Step-by-step: the solo route to Yogg-Saron

You don't need to kill every boss. These are the required ones, in order:

1. Flame Leviathan. Zone into Ulduar and head forward to the Leviathan. The vehicles near the entrance are optional at this level – you can ride your own mount there, though a vehicle can help shed aggro from the trash on the way.
2. XT-002 Deconstructor. Continue through the Siege area. Ignis and Razorscale are off the main path and can be skipped.
3. Kologarn. In the Antechamber, kill Kologarn to open the way onward. The Assembly of Iron and Auriaya are optional.
4. The four Keepers – Hodir, Thorim, Freya and Mimiron. Do them in any order. When each fight ends, the Keeper is freed and becomes friendly. Don't talk to any of them. Speaking to a Keeper is how you enlist their help against Yogg-Saron, and even one helper rules out the mount.
5. General Vezax. With all four Keepers down, the Descent into Madness opens. Kill Vezax to reach the final room.
6. Yogg-Saron. Step into the Prison of Yogg-Saron and the fight starts right away. With no Keepers involved, you're doing the "Alone in the Darkness" version – exactly what you want.
7. Loot and leave. If the head drops, congratulations. If not, hearth or teleport out and try again next week.

The one dangerous part: the brain phase

Yogg-Saron melts at max level, but phase two can still catch you out. Portals open around the room, and inside you'll find tentacles disguised as NPCs. Clear them to open the way to Yogg-Saron's brain. Meanwhile the brain is casting Induce Madness, a 60-second cast that drains all remaining sanity from anyone still inside. Kill the brain or leave through the exit portal before the cast finishes. With modern gear the brain usually dies in seconds, but if you go AFK or get lost in the illusion, you can wipe yourself out of your weekly attempt.

Farming tips

• Use alts. Each character gets its own weekly attempt, so a roster of max-level characters gives you many more rolls per week.
• Don't skip a week. At roughly 1%, the number of attempts is all that matters, so make the run part of your weekly routine.
• Pick a mobile class. Classes with strong movement tools get between Ulduar's wings much faster, which keeps a multi-character run short.
• Watch the Black Market. The mount also shows up on the Black Market Auction House from time to time.

Common mistakes

• Talking to a Keeper. This is the number one reason runs are wasted. After a Keeper fight, walk straight past them.
• Looking for a 25-player setting. It's gone; the mount still drops from the single version of the raid.
• Skipping Vezax. He stands between the Keepers and Yogg-Saron, so he's mandatory.
• Getting stuck in the illusion. Watch the Induce Madness cast bar and get out in time.
• Expecting quick results. At around 1%, this mount takes most players months or years of weekly runs. Treat it as a long-term farm and run it alongside your other legacy mounts.