• Darkmoon Card: Berserker!
• Item Level 200Disenchants into:
  [Abyss Crystal]: 1
• Binds when equipped
• Unique-Equipped
• Trinket
• Requires Level 80
• Equip: Improves your resilience rating by 100
  Equip: You have a chance to gain Berserker when you deal damage or take damage in combat, increasing your critical strike rating by 35 for 12 sec. Effect stacks up to 3 times.
• Sell Price: 10 73 43

Source

This item is a quest reward from  [80] Darkmoon Chaos Deck.

Notes

• There is no internal cooldown on this trinket.
• The proc chance is 50%.

Patch changes

Patch 3.0.3 (04-Nov-2008): Added. 
Patch 3.3.3 (2010-03-23): Now adds a static 100 resilience on equip, the proc now only increasing crit rating. 

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB

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