Steve the Xmas Star is a unique item that was introduced as a part of Christmas Event 2016.
Steve the Xmas Star is a star-shaped creature with a face in the middle.
This item reduces monster costs by 20%. Other items which reduce monster cost are the Magical Keg and Big Plague's Chier Pet.
As an Event Item, Steve the Xmas Star is unique and has neither any other rarity nor star rating.
Steve the Xmas Star could have been bought from the Christmas Item Dump during Christmas Event 2016. It was the last item in the shop and cost 10000.
Now, it can be bought at the Item Dump for 500 Diamonds.