This item is an ultra rare drop from Ultraxion in Dragon Soul on normal and heroic mode. It also has a chance to be listed on the Black Market Auction House.
Here you can buy Experiment 12-B for EU or US Servers.
You'll get guide for getting Experiment 12-B
• You'll be able to get Experiment 12-B
• After patch 10.2 might will need character transfer for access to BMAH
