• Petrified Lichen Guard
• Binds when picked up
  
• Shield
• Off Hand
• 3043 Armor
• 62 Block
• +24 Stamina
  +15 Strength
• Durability 100 / 100
• Requires Level 62
• Requires Sporeggar - Honored
• Equip: Afflicts your attacker with deadly poison spores each time you block.
• 

Source

The Petrified Lichen Guard is purchasable from the Sporeggar Quartermaster Mycah once you are honored with the Sporeggar faction. It also costs 15 Glowcaps.

Further Analysis

The effect "Afflicts your attacker with deadly poison spores each time you block." causes a stacking debuff to anything whose attack the player blocks. This debuff stacks to 5, starting at 12 nature damage every 3 seconds and stacking to 60 nature damage every 3 seconds. Does not appear to be affected by +Spell Damage effects. This is an excellent shield for a Protection Pally to AoE grind with.

External links

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