Images:

gw2-foefires-power-hammer-1gw2-foefires-power-hammer

gw2-foefires-power-hammer-3gw2-foefires-power-hammer-2

Set:

Slot Item Name Trading Post Preview Code
Hammer http://db.dulfy.net/item/31078 GW2 TP [&AgFmeQAAAA==]

Where to Obtain:

Mystic Forge: 1 Eldritch Scroll, 1 Gift of Light, 1 Mystic Coin, 250 Orichalcum Hammer Head