Daedric Artifact

Of each of the seventeen Daedric Princes, sixteen have an artifact attributed to them in The Elder Scrolls V: Skyrim, as Jyggalag has no presence or reason to be in Skyrim. Before these artifacts can be obtained, however, specific tasks called Daedric Quests must be performed. Two of these Daedric Quests involve the reward being a choice between two artifacts, one quest being the The Black Star and the other being Ill Met By Moonlight.

Artifacts

Azura's Star or The Black Star This reusable soul gem is rewarded for completing The Black Star quest. Azura's Star has the ability to trap white souls, or those of non-sentient creatures. These souls can be used for enchanting and for recharging previously-enchanted weapons. The Black Star has the ability to trap black souls, or those of sentient beings, though it functions like a Black Soul Gem which traps all souls up to the Grand level, in it.
Dawnbreaker This One-Handed sword is rewarded for completing The Break of Dawn quest. Dawnbreaker sets enemies on fire, while also dealing more damage to undead like draugr and vampires and has a chance to make undead explode into blue flames upon death, which damages and causes nearby undead to flee, in the same sense as Bane of the Undead.
Ebony Blade This Two-Handed sword is rewarded for completing The Whispering Door quest. The Ebony Blade absorbs 10 points of health from enemies per hit, but can be upgraded only by slaying friendly characters (such as a person whose favor has been completed). For every two such characters killed the weapon increases in power, adding two to the strength of the absorb health, up to the maximum of 30. Due to coding errors, it levels up two-handed, buts benefits from one-handed perks. This has been fixed with patch 1.9.
Ebony Mail This piece of unique armor is rewarded for completing Boethiah's Calling quest. The Ebony Mail is a heavy armor cuirass that is enchanted with the muffle effect and inflicts 5 poison damage per second to nearby enemies. It also produces a shadowy effect while sneaking.
Mace of Molag Bal This one-handed weapon is rewarded for completing The House of Horrors quest. The weapon not only drains 25 points of stamina and magicka per hit, it also steals the soul of an enemy if they die within three seconds.
Masque of Clavicus Vile This unique Heavy Armor helm is rewarded for completing A Daedra's Best Friend quest, but only if the Dragonborn chooses to give Vile his axe instead of using it to kill Barbas. Masque of Clavicus Vile holds the following enchantments: Prices are 20% better Speech increased by 10 points Magicka regenerates 5% faster
Mehrunes' Razor This unique dagger is rewarded for completing the Pieces of the Past quest. Mehrunes' Razor's enchantment has a 1.98% chance to instantly kill nearly any opponent.
Oghma Infinium The Oghma Infinium is a powerful tome of knowledge that is rewarded for completing theDiscerning the Transmundane. When read, the Oghma Infinum will grant a permanent 5-point boost to all skills related to any one of the three major guardian constellations: the Warrior, the Mage, and the Thief.
Ring of Namira This ring is rewarded for completing The Taste of Death quest. The Ring of Namira grants the user with a 50 point Stamina boost and the bonus of feeding on corpses granting 50% health and stamina regeneration.
Sanguine Rose This unique staff is rewarded for completing A Night to Remember quest. The Sanguine Rose summons a leveled Dremora to fight for the wielder for sixty seconds.
Savior's Hide and/or Ring of Hircine Either of these items is a potential reward for completing Ill Met By Moonlight quest, in a certain manner. Savior's Hide is a unique light armor cuirass that may be obtained if Sinding is killed at the conclusion of the quest. It provides the following benefits Increases Magic Resistance by 15%. Increases Poison Resistance by 50%. The Ring of Hircine may be obtained if Sinding is helped during the quest. Its enchantment grants the wearer unlimited werewolf transformation a day, assuming that the wearer is already a werewolf.
Skeleton Key The Skeleton Key is obtained during the Thieves Guild quest Blindsighted, but must be returned to the Twilight Sepulcher to complete the questline. The key is a decorative, unbreakable lockpick. It may be kept permanently, but at the cost of not being able to progress any further in the Thieves Guild questline.
Skull of Corruption This unique staff is rewarded for completing Waking Nightmare quest. The Skull of Corruption deals 20 points of damage, but increases to 50 if powered with dreams collected from sleeping people. Casting the staff at them while sleeping will gather five dreams for the staff. Casting at an character while they're awake, however, will be treated as an attack. The staff has a range of effect on it and also has a unique screen illusion when casting.
Spellbreaker This unique shield is rewarded for completing The Only Cure quest. When blocking, it produces a Ward-like effect that protects the user from fifty points of magicdamage.
Volendrung This unique warhammer is rewarded for completing The Cursed Tribe quest in Largashbur. Volendrung, also known as the Hammer of Might, absorbs fifty points of Stamina per hit. It is essentially a giant stamina sponge, as many two-handed weapons use a lot of stamina for their power attacks.
Wabbajack This unique staff is rewarded for completing The Mind of Madness. The Wabbajack casts an unpredictable spell whose effect ranges from transforming enemies into other creatures to casting a random destruction spell to even fully healing enemies.

Daedric Artifact - Weapons

Name				Enchantment
Dawnbreaker	12	10	740	+10 Fire Damage; May cast Bane of the Undead on killing an undead
Ebony Blade	13	10	2000	Absorb Health 10-30 (Damage increases by 2 for every 2 followers or questgivers that the player kills), Unlimited charges
Mace of Molag Bal	17	18	1257	25 Magicka Damage, 25 Stamina Damage, Soul Trap
Mehrunes' Razor	11	3	860	Small Percent Chance to kill instantly
Sanguine Rose	0	10	2087	Summons a Dremora for 60s. Also can summon one additional Dremora if the player has the Twin Souls Perk.
Skull of Corruption	0	10	1680	20 Damage, or 50 if powered with dreams from sleeping people
Volendrung	25	26	1843	Absorb 50 Stamina
Wabbajack	0	10	1565	Random spell effect or changes target creature into another random creature

• The attack of the weapon is the same as the level as you got it.

Daedric Artifact - Apparel

Name				Enchantment
Ebony Mail	45	28	5000	Muffle while sneaking and a continuous 5 poison damage with an area of effect on hostiles. Gives off a black "shroud" effect while sneaking.
Ring of Hircine	0	0.3	400	Unlimited daily Werewolf transformations. (Only works if the player is a Werewolf)
Ring of Namira	0	0.3	870	+50 Stamina. Feeding from NPC corpses raises Health by 50 and Health Regen by 50% for 4 hours
Savior's Hide	26	6	2679	Resist Magic 15%, Resist Poison 50%
Spellbreaker	38	12	225	While blocking, creates a ward that protects against spells for up to 50 points. (It also protects against shouts, from the likes of the Draugr Deathlord, Draugr Scrouge, etc.) Renews every second. It also blocks shouts from dragons.
Masque of Clavicus Vile	23	7	1277	Prices are 20% better, +10 Speech, and Magicka regenerates 5% faster.

Daedric Artifacts - Other Items

Name			Enchantment
Azura's Star /The Black Star	0	1000	Reusable Grand Soul Gem / Reusable Black Soul Gem The normal Azura's Star is unable to capture black souls but can capture all other souls, while "The Black Star" can capture all souls (although Nelacar will say it can only hold black souls)
Oghma Infinium	1	2500	Once only, +5 Skill Increases to your choice of Combat, Magic, or Stealth skills
Skeleton Key	0.5	0	Unbreakable Lockpick that must be returned at the end of the Thieves Guild quest. (There is a lockpicking perk for unbreakable normal lockpicks.)