This includes items and quests that can no longer be obtained or are now deprecated.
The in-game information in this article is kept purely for historical purposes.
Reinforce
Items take 5/10% less durability loss when you die.
Reinforce was a guild perk that decreases the durability loss of your gear upon death. Rank 1, available at guild level 7, causes 10% less durability damage. Rank 2, at guild level 9, causes 20% less damage.
Patch 6.0.2 (2014-10-14): Removed. 
Patch 4.0.3a (2010-11-23): Added. 