The Darkest Knight- the Nightwalker

I've been looking at texture packs in the marketplace, and have found some pretty good inspiration in one in particular. In the Ultra Fantasy Texture pack, a tall black knightly figure can be seen next to a creeper and next to a witch and evoker. My idea is to add a tall, slender, black knight to wander the night. It is called the Nightwalker. It has the ability to teleport the player to it, if angered. It wields a giant black sword, and has one black hole in the mask where nothing can be seen of the Nightwalker's face. It wanders the night, its tattered cape of black flowing behind it. I think this would be a good opportunity for new weapons to be added, so maybe said weapons can be obtained by slaying a nightwalker? Also, I think they should drop their helmet and cape always. Along with their other armor pieces. The idea is that they are literally focused shadow, so killing them would drop the things it's holding or wearing. The new weapons are the Nightblade (its giant black sword), the Scythe, the War Hammer, and the Dagger.

Please vote! :)