@JeremyECrawford do the spells known by a class include any racial spells they may know? so bards start off with 2 cantrips, would a tiefling's thaumaturgy count as one of them?

— Albigatin but merry (@albigatin) November 28, 2017

A class's spells are on that class's spell list. Sometimes you'll get a feature that adds spells to that list—features like the bard's Magical Secrets. Racial traits aren't added to your class's list unless your trait says otherwise. #DnD https://t.co/Z1cF6uLLwD

— Jeremy Crawford (@JeremyECrawford) November 29, 2017

@JeremyECrawford Can you cast a spell, any spell, without actually "knowing" the spell? Or are all spells available for you to cast considered "known" to you? ex: Shadow Monk: Darkness. Does he know the spell? The rules for Spells state that he has to know it or have an item.

— calebrus44 (@calebrus44) November 17, 2017

Many features in the game give you the ability to cast a spell without adding it to the list of spells you know or have prepared. Such features usually represent an innate ability to channel the magic of the spell, without knowing the particulars of its form. #DnD https://t.co/FNlWFmQRZ7

— Jeremy Crawford (@JeremyECrawford) November 17, 2017

So the part on p201 that states you have to have the spell fixed firmly in your mind means that you don’t actually have to know the spell? How does that make sense? It’s contradictory. The features circumvent that rule.

— Jeremy Crawford (@JeremyECrawford) November 17, 2017

The upshot here being that a Way of Shadows monk/Sorcerer can’t cast the spells from Shadow Arts using sorcerer spell slots, yeah?
That's correct.

— Jeremy Crawford (@JeremyECrawford) November 17, 2017

…which allows you to cast a spell that you don’t actually know how to cast? This is the part I’m having trouble with. If you know HOW to cast it, then it is a known spell. How could it be otherwise? You channel it innately. Many characters and monsters in the game can cast certain spells innately and have no idea how they do it.

— Jeremy Crawford (@JeremyECrawford) November 17, 2017