[Ulvenok]

He played quite a big role in Glorfindel's prophecy. I don't know things just doesn't seem to be quite right here, one could imagine that Tom also gave the hobbits their blades because the barrows were within his land and he wished the wraiths to go away and hoped the hobbits would get rid of the witch king. It's quite a coincidence that they would jump into Bombadil and that he would eventually give them the only weapon capable of killing the witch king. Or maybe not....