"After a battle, you find sometimes yourself in the cruelest of positions, where you kill not out of anger or the need to protect yourself...but to end the suffering of those you can't save."
Bind On EquipTierIIIScales With:INT 90%, FOC 65%3.0Weight2000Durability
We can't find any source for this item (quests reward, drop, etc). It's highly probable this item is not obtainable right
now.
It seems that the New Vile Mercy is obtainable.