Mark of Defiance

==Source==
This item is sold by:
* at Telredor in Zangarmarsh for 30 Mark of Honor Hold
* at Zabra'jin in Zangarmarsh for 30 Mark of Thrallmar
==Notes==
This item is triggered from landing any harmful spell on a target. That includes the following spells and effects:
*Non-damaging, offensive abilities (e.g. Silence)
*Hits from item procs (e.g. Satyr's Lash's Shadow Bolt) and temporary enchants (e.g. Bloodboil Poison)
*Hits from mage armor spells (Frost Armor and Molten Armor)
*Secondary effects
Hits from the shaman's weapon buffs (Frostbrand Weapon and Flametongue Weapon) cannot trigger it, however. 
The effect seems to have an internal cooldown of approximately 16 seconds.