One quest for each Daedric Prince who has one in the base game. Each quest's artifact is in its row. Nocturnal's is part of the Thieves Guild and Hermaeus Mora's also opens through the main quest.
Finish The Black Star
Azura. Azura's Star or the Black Star, your choice.
Finish Boethiah's Calling
Boethiah. The Ebony Mail.
Finish A Daedra's Best Friendmissable
Clavicus Vile. The Masque of Clavicus Vile, or the Rueful Axe (which isn't a Daedric artifact). The quest giver can die before you meet him.
Finish Discerning the Transmundanemissable
Hermaeus Mora. The Oghma Infinium. Can be failed.
Finish Ill Met by Moonlight
Hircine. The Ring of Hircine and/or the Savior's Hide.
Finish The Cursed Tribe
Malacath. Volendrung.
Finish Pieces of the Pastmissable
Mehrunes Dagon. Mehrunes' Razor. Can be failed.
Finish The Whispering Doormissable
Mephala. The Ebony Blade. The quest giver can die before you meet him.
Finish The Break of Dawn
Meridia. Dawnbreaker.
Finish The House of Horrorsmissable
Molag Bal. The Mace of Molag Bal. Can be failed.
Finish The Taste of Deathmissable
Namira. The Ring of Namira. Can be failed.
Finish The Only Cure
Peryite. Spellbreaker.
Finish A Night to Remember
Sanguine. The Sanguine Rose.
Finish The Mind of Madness
Sheogorath. The Wabbajack.
Finish Waking Nightmare
Vaermina. The Skull of Corruption, if you take it.
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