The rarity of Omen's Embrace is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Omen's Embrace is a skin for Vengeful Spirit. The skin was added to the game on December 7, 2015, it was created by Yi.
Omen's Embrace is currently one of the most popular skins, but it is rarely seen in the game due to its high price.