Warlock Tier 1 – Felheart Raiment
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.
Felheart Belt (BOE) – Trash mobs
Felheart Bracers (BOE) – Trash mobs
Felheart Gloves – Lucifron
Felheart Pants – Magmadar
Felheart Robes – Golemagg the Incincerator
Felheart Shoulder Pads – Baron Geddon, Garr
Felheart Horns – Garr & Golemagg the Incinerator
Felheart Slippers – Shazzrah, Gehennas, Sulfuron Harbinger