Shadow Beast is an enemy in the ToC, Forge, ToS, Cave, Battlefield, and Lightning Forest areas of FoW. They can also be found in the Realm of Torment with a very slightly different build, but good luck making a speed clear there.
jumps to any available corpse to heal itself
Hard Mode Stats
Drop: Obsidian Shard
Attack Damage Type: [Unknown]
breaks with a 50% speed boost
wield a staff or a wand and don't go below 80% health
Shadow Lord Vogris AKA "ToC Lord", and the Shadow Lord AKA "ToS Lord" are just Shadow Beasts with names.