Argent Dawn

Alchemy

Honored

Recipe: Transmute Air to Fire

Blacksmithing

Honored

[Girdle of the Dawn]

Revered

[Gloves of the Dawn]

Enchanting

Honored

Formula: Enchant Bracer - Mana Regeneration

Revered

Formula: Enchant Bracer - Healing

First Aid

Honored

Formula: Powerful Anti-venom

Leatherworking

Honored

[Dawn Treaders]

Revered

[Golden Mantle of the Dawn]

Tailoring

Honored

[Argent Boots]

Revered

[Argent Shoulders]

Enchantments

Revered

You may also purchase a resistance enchant to a shoulder piece. The only other shoulders enchants in game could be attained from Zandalar Tribe at Exalted reputation. You won't be able to purchase these enchants until after you completed a quest that requires you to turn in 10 Valor Tokens.

Arcane Mantle of the Dawn (+5 arcane magic resistance to shoulders)
Flame Mantle of the Dawn (+5 fire magic resistance to shoulders)
Frost Mantle of the Dawn (+5 frost magic resistance to shoulders)
Nature Mantle of the Dawn (+5 nature magic resistance to shoulders)
Shadow Mantle of the Dawn (+5 shadow magic resistance to shoulders)

Exalted

You may purchase a resist all enchant to a shoulder piece after completing a quest to turn in 25 Valor Tokens.

Chromatic Mantle of the Dawn (+5 to all resistances to shoulders)

Thorium Brotherhood

Alchemy

Friendly

[Recipe: Transmute Elemental Fire]

Blacksmithing

Friendly

[Dark Iron Bracers] (Armorsmith)

Honored

[Dark Iron Destroyer] (Axesmith)
[Dark Iron Helm] (Armorsmith)
[Dark Iron Reaver] (Swordsmith)
[Fiery Chain Girdle] (Armorsmith)

Revered

[Black Amnesty] (Weaponsmith)
[Blackfury] (Weaponsmith)
[Dark Iron Gauntlets] (Armorsmith)
[Dark Iron Leggings] (Armorsmith)
[Fiery Chain Shoulders] (Armorsmith)

Exalted

[Blackguard] (Swordsmith)
[Dark Iron Boots] (Armorsmith)
[Ebon Hand] (Hammersmith)
Nightfall (Axesmith)
[Sulfuron Hammer]

All Blacksmiths can obtain this. To receive the plans you must bring a single

[Sulfuron Ingot] which drops from Golemagg the Incinerator (drop rates: Thottbot / Allakazam). There is no reputation requirement for the plans and you need only have an ingot in your inventory when you speak to him.

Now, once you actually craft the hammer (mats costs several thousand gold), you will want to obtain an