This tier drops entirely in Molten Core. Some pieces are BOP while the two pieces that drop on trash are BOE so you can check the AH for a couple of the pieces.
Boots of Prophecy – Shazzrah
Girdle of Prophecy (BOE) – Trash Mobs
Gloves of Prophecy – Gehennas
Pants of Prophecy – Sulfuron Harbinger
Mantle of Prophecy – Magmadar
Robes of Prophecy – Golemagg the Incinerator
Vambraces of Prophecy (BOE) – Trash Mobs