Masters of Conjuration are able to summon the presence of the Daedric Princes themselves using a technique unknown to most mages. To summon a Daedric Prince’s presence, the caster must perform a ritual containing many complex incantations that takes 6 hours on the Prince in question’s Summoning Day (as shown below). At the conclusion of the ritual, make a Conjuration test at -30. On a success, the Prince hears the caster’s summons and may answer them if they so wish.

If the ritual is done on a day other than the prince’s summoning day, roll a d10. On a 10, the Prince entertains the caster’s summons. On a 2-3, the Daedric Prince is insulted and smites the caster, dealing 10d10 Magic damage. On a 1, the Prince hears the caster’s summons, though will most likely not be happy being disturbed when it is not their Summoning Day.

Additionally, if the caster is attempting to summon a Daedric Prince on their Summoning Day and it is storming with thunder, on a d10 roll of a 8+ Sheogorath appears instead.

Prince Summoning Days

DatePrince
1st of Morning StarClavicus Vile
13th of Morning StarMeridia
2nd of Sun’s DawnSheogorath
16th of Sun’s DawnSanguine
5th of First SeedHermaeus Mora
21st of First SeedAzura
9th of Rain’s HandPeryite
9th of Second SeedNamira
5th of Mid YearHircine
10th of Sun’s HeightVaermina
8th of HearthfireNocturnal
8th of FrostfallMalacath
13th of FrostfallMephala
2nd of Sun’s DuskBoethiah
20th of Sun’s DuskMehrunes Dagon
20th of Evening StarMolag Bal