Amulet of Blood Fury
The Amulet of Blood Fury can be created by combining a Blood Shard with an Amulet of Fury. Blood Shards can be obtained from Larran's Big Chest at an effective drop rate of 1 in 475.
The amulet of blood fury has the same stats as the amulet of fury. However, using the amulet of blood fury in melee combat will consume charges. Each charge provides a 20% chance to heal 30% of the damage dealt on any hit. Creating the amulet will give it 10,000 charges. Additional blood shards will add 10,000 charges each. The amulet is capped at 30,000 charges total. If the amulet runs out of charges, it will convert back to an amulet of fury.
On PvP death, the amulet of blood fury is converted back to an amulet of fury and all charges will be lost.