Windwalk

Permanently enchant a weapon to sometimes increase dodge rating by 99 and movement speed by 10% for 10 sec when striking in melee.

Source
Formula: Enchant Weapon - Windwalk can be purchased with 5 Maelstrom Crystal from the Shard Traders in each faction's coastal port in Twilight Highlands.
 * in Highbank.
 * in Dragonmaw Port.