Images:

gw2-arachnophobia-short-bowgw2-arachnophobia-short-bow-2gw2-arachnophobia-short-bow-3

Set:

Slot Item Name Trading Post Preview Code
Short bow http://db.dulfy.net/item/36051 GW2 TP [&AgHTjAAA]

Where to Obtain:

Mystic Forge: 1 Gift of Spiders, 1 Eldritch Scroll, 100 Mystic Coin, 20 Super Sigil of the Night
Can also be obtained as drops during Halloween 2012