Tier 4 token source

The items are sold by Asuur (Aldor) or Arodis Sunblade (Scryer) in Shattrath City. They are "purchased" with token loot items.
 Tokens of the Fallen 
Slot 	Token	Dropped by 	Found in
Chest 	 	Magtheridon 	Magtheridon's Lair
Head 	 	Prince Malchezaar 	Karazhan
Hands 	 	The Curator 	Karazhan
Legs 	 	Gruul the Dragonkiller	Gruul's Lair
Shoulders	 	High King Maulgar 	Gruul's Lair