Decaying Defender Outfits Quest
This quest has no legend.
Location
All the locations of the Rotten Blood Quest.
Reward
Dangers
1
Base Outfits
Finish the Rotten Blood Quest by defeating Bakragore.
First Addon
Use a piece of Cursed Wood. 
Second Addon
Use a Darklight Geode. 
Upon using both items you will get the achievement Fully Decayed.