Once you have finished with your rare (blue) set for your class, you can move onto your epic (purple) set!!
Druid
1. Cenarion Raiment
2. Stormrage Raiment
Hunter
1. Giantstalker Armor
2. Dragonstalker Armor
Mage
1. Arcanist Regalia
2. Netherwind Regalia
Rogue
1. Nightslayer Armor
2. Bloodfang Armor
Shaman
1. The Earthfury
2. The Ten Storms
Paladin
1. Lawbringer Armor
2. Judgement Armor
Priest
1. Vestments of Prophecy
2. Vestments of Transcendence
Warrior
1. Battlegear of Might
2. Battlegear of Wrath
Warlock
1. Felheart Raiment
2. Nemesis Raiment