Is spellcasting not an ability. Some spells go beyond book learning. I think 3.5 had a better context saying verbal and somatic was no as you have not yet been trained to use animal substitutes for sound and animal gestures in place of learned human ones. Later you train to sub.

— Joshua Niedzwiecki (@CONTINGENCY_sys) January 26, 2019

Content for another RPG or for a home brew has no bearing on how D&D officially works, but feel free to take inspiration from any source for your home game!

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

Yes, that’s an option in 3rd edition.

— Jeremy Crawford (@JeremyECrawford) January 27, 2019

You’re definitely free to combine material from different editions in your home game.

— Jeremy Crawford (@JeremyECrawford) January 27, 2019

Watching the PAX D&D game. The idea of a ‘group check’ where it’s a matter of more successes than failures, is that in the rules anywhere in 5e, or is that your homebrew rule?

Group checks are a great option when you want a party to succeed or fail together. To learn how such checks work, take a look at the section called “Group Checks” in the “Player’s Handbook” (p. 175). #DnD https://t.co/GXdS3zk0Nm

— Jeremy Crawford (@JeremyECrawford) January 23, 2019

@JeremyECrawford I noticed the forge cleric from Xanthar's guide does not gain martial weapon proficiency, but is able to use blessing of the forge on a martial weapon.

Was this an oversight, or was it intentional to be sure the forge cleric did not have it for flavor/balance?

— Jeff (@ghandigun) January 24, 2019

The Forge cleric isn't designed to have proficiency with martial weapons, yet that cleric is designed to have the option of enhancing martial weapons.

The cleric might have proficiency from a source other than the class. And the cleric might want to help their friends. #DnD https://t.co/E8jyIBUOJ7

— Jeremy Crawford (@JeremyECrawford) January 24, 2019

@JeremyECrawford I have a question about Druid's Wild Shape, it says you "can't cast spells," but it also says you "retain any abilities given by your class/race" If I was a Gith could I still use their psionics (like mage hand) because the spells do not require components?

— skelo5611 (@skelo5611) January 26, 2019

When the D&D rules say you can’t do something, you can’t do it, unless the rules make an exception for you.

For example, Wild Shape says you can’t cast spells, full stop. That means you can’t cast spells. #DnD https://t.co/tN3AdiUwCL

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

psionics are not magic and therefore not spells. Think mind flayer

— david miedaner (@drexel911) January 26, 2019

In D&D, if you use a feature that says you are casting a spell, you are casting the spell.

For example, when a mind flayer casts one of its innate spells, it is casting a spell. #DnD https://t.co/AqGAgmAuYZ

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

In a case like the above when two mutually exclusive phrases take place in the same description, would it be correct to assume the one that appears first takes precedent if the two conflict? What are the mutually exclusive statements you have in mind?

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

so if a mystic uses an ability of theirs, that wouldn't that be able to be countered with like a counterspell then? because it doesn't specifically state that it's a spell or innate spell yes?

— Josh Rob (@RobDogg5) January 26, 2019

If a magical feature in the game isn’t a spell, it’s immune to things that counter/dispel only spells. #DnD https://t.co/FjeBqbgV0X

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

Well, Wild Shape saying “you retain any abilities given by your class or race.” I assumed that Spellcasting would be considered as falling under one such ability. In which case, I would think it saying “you can’t cast spells” would make them mutually exclusive, wouldn’t it? It’s true that Wild Shape lets you keep your class features, but it also suspends your ability to cast spells.

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

The funny thing is, all of this is subject to change at the implementation level, since Mike’s approach-last he showed it off-suggested he was going for a spellcasting based approach, which WOULD make things spells. tl;dr, Mystic is UA and therefore not official game content. My statement was about the game, not the mystic.

Also, nothing in Happy Fun Hour is binding for what we’re doing in our books.

— Jeremy Crawford (@JeremyECrawford) January 26, 2019

What about Falling in Love in D&D? Does that use up your movement?

— Alphastream (@Alphastream) January 24, 2019

Falling in love in D&D uses your heart. It might also use your movement if you need to run in slow motion toward your beloved. 💖 #DnD https://t.co/jD363NBeC6

— Jeremy Crawford (@JeremyECrawford) January 24, 2019