Eye of Shadow
Eye of Shadow 
120 Hit Points
180 Experience Points per kill
Summon/Convince: --/--
Abilities: Melee (0-70), Life Drain (20-30), Invisibility
Pushable: ?
Push Objects: ?
Walks around: Fire,Energy, Poison
Est. Max. Damage: 100 hp per turn
Immune to: Invisibility
Neutral to: Physical, Energy, Fire, Poison, Life Drain
Sounds: None
Task: Experience Tasks
Field Notes: An Eye of Shadow will never retreat (they fight until death). Humans that can quickly go invisible. They sneak up on intruders and try to kill them quickly.
Location: Triangle Tower, Drefia, Garrogat Hero Cave in the Warlock room, Ghostlands, Shadow Tomb, Ancient Ruins Tomb, Tarpit Tomb, Stone Tomb, Mountain Tomb, Peninsula Tomb, Oasis Tomb, Yehsha Library Tomb
Strategy:
You can't attack this creature with melee while it is invisible. The only way to defeat them is with Magic or by making them visible again by attacking them with area runes (Explosion, GFB), making them walk over a trap, an area spell like Berserk or using Cancel Invisibility. Sometimes they don't go invisible right away or at all and can be meleed. If you can't do anything but melee you can fight Eyes of Shadow by going down/up stairs or a cliff and waiting until they are visible, then attacking them.
Warriors: Make them visible using one of the runes above or use Berserk, then attack them with melee. They are weak in defense, so a knight can easily kill one.
Scouts: Make them visible using one of the runes above and attack with distance.
Mages: Make them visible using one of the runes above or an attack spell. Another good idea, since Eyes of Shadow always stick by you, Keep an eye on your hp bar, as it is hard to tell how many Eyes of Shadow you are actually facing. If there is a large amount, your hp could go from full to empty without you noticing.
Loot: 0-8 gp, Throwing Knife, Leather legs, Blank Rune, Brass Legs, Obsidian Lance
Monsters