Shadow Blade

By most accounts, the Shadow Blade no longer exists. They can still be seen in the Fissure of Woe, carried by Shadow Warriors. However, since these weapons were highly coveted during beta (to the exclusion of many other sword types) they are generally considered to be no longer dropped by enemies, save the Unique sword, Victo's Blade, a green unique item only dropped in the Underworld accessible through the Tombs of Primeval Kings, dropped by the Warrior boss, Victo.