Azura's Star or Black Star

Either 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 weapons.

The Black Star has the ability to trap either black or white souls, up to the Grand level. It functions similarly to a Black Soul Gem.

Dawnbreaker

This One-Handed sword is rewarded for completing The Break of Dawn quest.

Dawnbreaker sets enemies on fire, and has a chance to make undead explode into blue flames upon death, which damages and causes nearby undead to flee.

Ebony Blade

This Two-Handed sword is rewarded for completing The Whispering Door quest.

The Ebony Blade absorbs 10 points of health from enemies but it can be upgraded by slaying friendly NPCs (such as a person whose favor has been completed).

For every two such characters killed the weapon increases in power, adding 2 to the strength of the absorb health, up to the maximum of 30.

Ebony Mail

This piece of unique armor is rewarded for completing Boethiah's Calling quest.

Ebony Mail is a heavy armor cuirass that is enchanted with the muffle effect and it inflicts 5 poison damage per second to nearby enemies.

Mace of Molag Bal

This mace 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 it dies within 3 seconds.

Masque of Clavicus Vile

This unique Heavy Armor helm is rewarded for completing A Daedra's Best Friend quest.

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 3% chance to instantly kill any opponent.

Oghma Infinium

The Oghma Infinium is a powerful tome of knowledge that is rewarded for completing the Discerning the Transmundane.

When read, the Oghma Infinum will grant a permanent boost to all skills related to the three major guardian constellations. These are 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 50 extra points of Stamina and feeding on corpses grants a bonus to health and stamina regeneration.

Sanguine Rose

This unique staff is rewarded for completing A Night to Remember quest.

Sanguine Rose summons a Dremora to fight for the wielder for 60 seconds.

Savior's Hide or Ring of Hircine

Either of these items is a potential reward for completing Ill Met By Moonlight quest.

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 one additional 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 in the following quest.

The key is essentially a decorative unbreakable lockpick. It may be kept permenantly, but at the cost of progressing 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 damage, but increases to 50 if powered with dreams collected from sleeping people. Casting the staff at them while sleeping will gather 5 dreams for the staff. Casting at an NPC 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 50 points of magic damage.

Volendrung

This unique warhammer is rewarded for completing The Cursed Tribe quest in Largashbur.

Volendrung, also known as the Hammer of Might, absorbs 50 points of Stamina per hit.

Wabbajack

This unique staff is rewarded for completing The Mind of Madness.

Wabbajack casts an unpredictable spell which ranges from transforming enemies into other creatures to casting a random Destruction spell to even healing enemies.