Images:

gw2-mystic-battlehammer-1gw2-mystic-battlehammer1gw2-mystic-battlehammer-21

Set:

Slot Item Name Trading Post Preview Code
Hammer http://db.dulfy.net/item/31097 GW2 TP [&AgF5eQAA]

Where to Obtain:

Mystic Forge: 30 Mystic Coin + 1 Eldritch Scroll + 5 Orichalcum Hammer Head + 5 Large Ancient Haft

Particle Effects:

Sparks at the hammer head