Arcanum of Rapidity

• Arcanum of Rapidity
• Binds when picked up
• Use: Permanently adds 10 haste rating to a leg or head slot item.
  Enchanting the item causes it to become soulbound.
• Requires Level 50
• 1 Charge

The Arcanum of Rapidity is a enchanted gem that will add a haste effect to either a head or leg item. This effect will not stack with other enchantments on the item.

Source

The Arcanum of Rapidity is a quest reward from the quest Libram of Rapidity which starts with Lorekeeper Lydros in Dire Maul. To complete the quest, you must turn the following items:

• 1x  [Libram of Rapidity]
• 1x  [Pristine Black Diamond]
• 2x  [Large Brilliant Shard]
• 2x  [Blood of Heroes]

Arcanum of Rapidity as a quest objective

• The Savage Guard - Arcanum of Rapidity

Notes

• The Arcanum used to be needed for the special class-specific Zul'Gurub enchantments. However, the requirement was removed in Patch 1.11.
• The quest to get all Arcanums are repeatable.
• Attack speed increases do stack with each other, you can get two librams, a counterweight and haste to gloves enchant, and they all stack.
• "Haste rating" is now used instead of a straight percentage buff. According to Blizzard, items converted to the new rating system have no direct changes in their effects.

Patch changes

• Patch 4.0.3a (2010-11-23): Removed.
  

External links

• Wowhead
• WoWDB