do you have to manipulate cost components if you have a focus?

— Zasabi (@zasabi7) June 26, 2016

Having a spellcasting focus is irrelevant to a spell that requires a component with a cost. #DnD https://t.co/9t94JdE9tX

— Jeremy Crawford (@JeremyECrawford) July 21, 2016

@JeremyECrawford master, if a character has multiclass(wiz 12/fighter 1) can he level up both classes to 20?

— Blima (@Andreblima21) September 22, 2016

The maximum character level is 20. If you multiclass, your levels in all your classes can add up to a number no higher than 20. #DnD https://t.co/goBFQghxou

— Jeremy Crawford (@JeremyECrawford) September 22, 2016

@Andreblima21 You're welcome!

— Jeremy Crawford (@JeremyECrawford) September 22, 2016

@konafusiona 20th lvl fighter with haste and 2-W fighting can make 6 attacks per round, right? Then action surge for 1 or 4 more? Yes, and Action Surge does let a fighter use Extra Attack again.

— Jeremy Crawford (@JeremyECrawford) February 3, 2016

@JeremyECrawford What about the additional action from a Haste spell? If used to attack, does extra attack get added to it as well?

— Ambryn (@konafusion) February 5, 2016

The haste spell states that you can make only one weapon attack with the action it provides. #DnD https://t.co/tR7JKfpvYa

— Jeremy Crawford (@JeremyECrawford) February 17, 2016

@JeremyECrawford The advantage of assassin, against creature that hasn't taken a turn, works for the entire combat? or just surprise round?

— André (@als260502) September 26, 2016

Assassinate works only against a creature that hasn't taken a turn yet. #DnD https://t.co/C1bBoaOHb5

— Jeremy Crawford (@JeremyECrawford) September 27, 2016

@JeremyECrawford A flying creature takes a op. attack from a guy with Sentinel feat.

As its movement became zero, it falls, right?

— ɟןǝsɯıɥ‾oɹbo@🎮 (@ogro_himself) October 6, 2016

If your speed drops to 0 while you're flying, you fall if you're not hovering. See the PH, p. 191, for more details. #DnD https://t.co/5LqmT59pef

— Jeremy Crawford (@JeremyECrawford) October 6, 2016

@JeremyECrawford Please, answer :
Can a warlock/sorcerer covert sorcery points to warlock spell slots?

— Mourisse (@Tio_Mou) October 19, 2016

Multiclassing: Spell slots from Spellcasting and Pact Magic are interchangeable (PH, 164). Flexible Casting cares about slot level. #DnD https://t.co/oaTsJK0zl0

— Jeremy Crawford (@JeremyECrawford) October 19, 2016

@74_amos @Tio_Mouso the answer is no but you can use your sorcerer spell slots to cast so it kind of doesn’t matter Exactly.

— Jeremy Crawford (@JeremyECrawford) October 19, 2016

@JeremyECrawford @Tio_Mou Are the new converted warlock spell slots recovered on a short rest?

— Azuro (@gandhi39) October 19, 2016

Multiclassing/Flexible Casting/Pact Magic: Sorcery points can create a slot that's used with Pact Magic. It's not a "warlock slot." #DnD https://t.co/TG9CacAUnb

— Jeremy Crawford (@JeremyECrawford) October 19, 2016

@JeremyECrawford Can a warlock with Devil's Sight see within/out of/into/through Hunger of Hadar? (I think no on the first 2: blinded) #DnD

— Robyn Kozierok (@robynkoz) March 1, 2016

Devil's Sight is meant to pierce the dark created by a spell like darkness, not the void of hunger of Hadar. #DnD https://t.co/hoZwN2vh3O

— Jeremy Crawford (@JeremyECrawford) March 2, 2016