Buy Experiment 12-B mount boost to unlock this augmented Dragon Soul dragon without farming Ultraxion or repeating RP-heavy raid runs. Skip low-drop attempts and add Experiment 12-B to your mount collection efficiently.
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To get the Experiment 12-B dragon mount, the player has to go the Caverns of Time at the east of Tanaris and enter the Dragon Soul raid. Once inside the raid, you have to proceed and kill all the bosses up to the fifth one, Ultraxion. Once Ultraxion is defeated, you have a chance to loot the mount from the Cache of the Aspects nearby. However, the chances of getting Experiment 12-B are only 1%.
Experiment 12-B is an extremely rare mount with only a 1% drop chance from Ultraxion boss fight in Dragon Soul raid. Judging by Wowhead, only about 13% of the playerbase has this mount, despite the fact that it came out 12 years ago. Thankfully, it was added to Black Market in 2019, making it much easier to aquire.
Experiment 12-B drops from both Normal and Heroic difficulties of the Dragon Soul raid. Both difficulties seem to share the same drop chances of the mount, though of course, Heroic difficulty does land bigger rewards, overall.