In Diablo II Resurrected, Shadow Killer is part of the Battle Cestus category and one of many unique Hand To Hand 2s in D2R. It is a relatively small item, taking 3 Blocks of space if you want to store it in the inventory or stash. Your character needs to reach at least the Required Level of 78 to carry this item. This Battle Cestus has a Strength Requirement of 110 before it can be used. Another limitation is Dexterity, which should be 110 as the very minimum.
This is already the elite version of this Hand To Hand 2, so it cannot be upgraded any further. The normal version is called Cestus, while the exceptional version is Hand Scythe.
Note: If this item can have sockets, you might be able to get some runes and get one of the runewords as a result - if you place them in the correct order.
Have a look at our builds to find out which items make the most sense for the character you're currently playing.
Below is a list of variations we can get for you from our network of trusted trade partners: