The 2012 Winter Veil event sees the addition of an item level 480 epic agility dagger - Miniature Winter Veil Tree
You have a chance of finding it in the Stolen Present
, the reward from the quest Your're a Mean One
. It is BoE so you should be able to pick it up from your local auction house as well.
We have added this item to our Loot Rank
service as a "world drop" item.