Warden Commander armor set

The Warden Commander Armor Set can only be obtained in Soldier's Peak with the Warden's Keep DLC.

The Warden Commander Armor Set set is a powerful set of massive plate armor that scales with The Warden's level. For example, the set is made from Viridium (Tier 4) when it is found at level 9. When it is found at level 18, it will be made of Dragonbone (Tier 7) and have much better stats.

Before patch 1.02 for the PC platform, you could increase the armor set tier by placing it in the Party Storage Chest in Warden's Keep. After traveling away from and back to Soldier's Peak (heading to camp and back will work), when you removed the armor it would be the "upgraded" version. While this method might still work on the console platforms, it no longer works on the PC platform after patch 1.02. The only method that works on the current PC platform is to sell the set to Mikhael Dryden in Soldier's Peak (possibly other merchants elsewhere), then close the merchant window, reopen it, and buy the set back from Mikhael. Buying back the Tier 7 set from Mikhael will cost roughly 35g. Regardless of the method you use, it is advisable to save your game before attempting an upgrade, because the increased strength requirements (up to 42 STR for the Tier 7 version) might render your upgraded armor unwearable.

NOTE: In the Xbox version, the set is currently bugged, and no Set Bonus will be given if the wearer is the Warden. Only companions will receive the Set Bonus once fully equipped.

Acquisition
The Armor is obtained by killing the demon-possessed corpse of Sophia Dryden, Levi Dryden's great-great grandmother as part of the Warden's Keep questline.