@JeremyECrawford Can a wiz target empty air with fireball or does it need to hit something solid to detonate? Are air bursts legal?

— Derrick (@Scyllan8) December 29, 2016

Fireball requires you to choose its point of origin. Its text doesn't require that point to be on an object. A point in space is fine. #DnD https://t.co/g4piX26DlV

— Jeremy Crawford (@JeremyECrawford) January 4, 2017

@SwampRobHow precisely can a wizard dictate that? Can he choose to cast it at a point exactly 23.5 feet away? As precisely as the DM allows.

— Jeremy Crawford (@JeremyECrawford) January 4, 2017

@KhameleonGardenIs a weapon created – like from the warlock’s Pact of Blade – considered a magic weapon? The first paragraph of Pact of the Blade answers your question.

— Jeremy Crawford (@JeremyECrawford) April 20, 2017

@JeremyECrawford How are those of us who are less adept at detecting sarcasm and humor supposed to know whether the rules are joking? Can't see their faces!

— David Swanson (@swansondavida) April 20, 2017

The rules are utterly humorless. I try to get them to laugh sometimes, but they just want to quietly do their work. #DnD https://t.co/t6nMyHs6e3

— Jeremy Crawford (@JeremyECrawford) April 21, 2017

@mattdomvilleIOW: Spells known for multiclass characters are determined by individual class in all respects, including changing spells? Yes.

— Jeremy Crawford (@JeremyECrawford) December 8, 2016

@CanaDutchian @mikemearls When True Polymorph is done (after 1 hour), can it be dispelled anymore? Yes.

— Jeremy Crawford (@JeremyECrawford) November 23, 2016

If something in the game deals half damage on a successful save, the text says so. #DnD https://t.co/BPIMN2ze6e

— Jeremy Crawford (@JeremyECrawford) January 9, 2017

@bmfrosty @mikemearls is there a list of what should be implicit and what should be explicit somewhere? Look at general rules first (conditions, combat, spellcasting, etc.) then exceptions (class features, spells, etc.).

— Jeremy Crawford (@JeremyECrawford) January 10, 2017

@JeremyECrawford Vampire turns into Mist form due to falling to 0 HP: is it a polymorph effect and as such can it be dispelled?

— Chris (@ratsenib) April 9, 2017

Dispel magic ends spells. A vampire isn't casting a spell when it turns into mist, so dispel magic has no effect on it. #DnD https://t.co/Be5q7270b8

— Jeremy Crawford (@JeremyECrawford) April 9, 2017

@JeremyECrawford Oozes can be grappled. Does this mean I can prevent a Gelatinous cube from using it's "Engulf" action by grappling them?

— Jolzeres (@Jolzeres) May 3, 2017

If an ability requires you to move 1 or more feet to use it and you can't move, then the ability can't currently be used. #DnD https://t.co/i3sA2TUKEh

— Jeremy Crawford (@JeremyECrawford) May 3, 2017

@JeremyECrawford What's your call? Do Winged Boots prevent falling into pits? I could see it either way.

— Ben Miller (@vmFoo) January 24, 2017

Winged boots give a flying speed. You can use that speed to move. The boots don't auto-activate to prevent a fall if you're on foot. #DnD https://t.co/5AsvQgMY32

— Jeremy Crawford (@JeremyECrawford) January 30, 2017