Yesterday, Sunday, Blizzard opened Ulduar with two copies of Naxxramas’ Patchwerk: One was tagged as DPS Test and the second was tagged as Tank Test. My group was able to kill the DPS test Patchwerk twice with some difficulty. However, we couldn’t kill the Tank Test dummy. We went as far as 1.3 million health.before he killed the tank. Daelo revealed the reason. It hits a 10% harder every 10 seconds. It is recommended to bring consumables and flasks to these tests in order to help fine-tune the event. Make sure to share your feedback about the Patchwerk DPS and Tank Tests at the following official forums thread.

Blizzard Quote:
Here will be a thread for everyone to post their test results from attempts against the two versions of Patchwerk on test.

One version is essentially just a normal patchwerk with double the HP for use as a DPS test. This is Patchwerk (DPS Test).

The other version we currently have is Patchwerk (Tank Test). This is Patchwerk without the Hateful Strike, double the HP, but most importantly every 10 seconds his melee damage increases by 10%. Not only are we looking to see just how long tanks can be kept up given maximum effort from the entire raid, but also how long can tanks be kept up with more limited numbers of healers.

Also, if there are suggestions for modifications or new versions of test Patchwerks, we’d love to here it.

On a side note, we’re working to get a test glyph vendor created. It won’t be ready for the next build to hit PTR, but we’ll have it later.