Soul Harvester's Charm
From WoWWiki
- Soul Harvester's Charm
- Binds when picked up
- Trinket
- Equip: Improves critical strike rating by 20.
Equip: Melee attacks which reduce you below 35% health cause you to gain 90 parry rating for 10 sec. Cannot occur more than once every 30 sec.
Source
Quest reward from: 
[55] The Gift That Keeps On Giving
Patches and hotfixes
Patch 3.0.1 (2008-10-14): Added
