How about artifacts that can only be created by fell and macabre moods?
Don't forget possessed! I guess Ill give it a try.
Universal
-Sentient: The Artifact in mind has the soul (or mind) of the being made to create it and thus has a limited influence over what happens to it
-Count Down: Upon the first use of the artifact the user has a limited time to live before they die from mysterious circumstances unless cured.
-Deathly Shreeks: The artifact gives off shreeks that plagues the mind of the user driving them further insane
-Blood On/Off: The artifact requires to be covered in blood to function
-Bleeding: The artifact will constantly bleed
-Vomit Inducing: Those who see the artifact will usually vomit
-Sacrifice: To work the artifact requires a ritual sacrifice
Crown and I guess Helmets
-Command Curse: A specific range of cursed beings are further more under your control such as zombies.
-Death Siphon: Living things around you start to wither and die, however your wounds heal faster as a result
-Over Glorious: You become so stunning that those around you have their eyes explode
-Insanity Stare: The wearer's gaze can drive victums insane
-Without Morals: The wearer becomes uninhibited and is able to eat or do anything without being inhibited by moral or taste regard.
-Brain Dead: The Wearer has sevearly reduced mental capacities... Horrible for adventurers but great for overly demanding nobles
-Hungry: The Crown will attempt to climb up to someone's head and eat their brains
Gloves
-Withering Touch: Things in your hand wither away instantly
-Alas poor Yeoric: When a skull is held in your hands it will speak to you as if it was that person in question
-Detachable: You are able to detach your wrists and move your hands around if need be
-Clawed: Your hands transform into dangerous claws
-Tentacled: Your hands transform into tentacles excellent for grabbing people
-Suffication: A grapple with the gloves on is always a sufficating
-Surgeon: The Gloves allow almost any part of the body (Skull, Liver, Toe) to be a valid target to "Rip out"
Weapon
-Zombie: The weapon makes those slain by it instantly rise as a zombie
-Death Curse: Those struck by the weapon suffer wounds every night until they are killed. Ordinary people fall instantly but that strong could live indefinately
-Bone Cutter: The weapon is completely unimpeeded by bones and thus will cut right through them
-Sickening: Those struck will be hit with a deadly disease
-Severence Package: Severed parts will come to life and attack your target
-Automatic: Upon striking the victum the weapon will act on its own and attack
-Grave: Those killed by the weapon are transformed into a glorious burial monument to themselves
-Monster: For everything killed by this weapon a monster will take its place (WOO!!!)
-Demonic Renewal: When the weapon successfully slays a hundred victums, a demon shall arise!
-Consume: Those slain feed the user
-Acid Blood: Blood shed from the victum is acidic and will burn, the user may or may not be immune to this however.
-Death Slaying: The weapon cannot harm the living, only the dead
-Growing: The Weapon continuously gets stronger with every kill until it reaches its max in which something may happen.
-Forgotten: The Weapon often can kill someone and cause everyone they ever met to forget they existed, the perfect kill.
-Record Keeper: The weapon has engraved the number of creatures it ever slain.