@armando_doval Is the intent behind a component pouch that you reach into it and pull out the relevant component for the spell? Yes.

— Jeremy Crawford (@JeremyECrawford) May 8, 2017

@armando_dovalHow do you handle components that don’t have a cost but can’t be stored? E.g. the flame for Heat Metal. If you're using a spellcasting focus or a component pouch, free components are abstracted away.

— Jeremy Crawford (@JeremyECrawford) May 8, 2017

@armando_dovalThanks! Last question: is reaching into the pouch part of the action used to cast the spell? Yes.

— Jeremy Crawford (@JeremyECrawford) May 8, 2017

@JeremyECrawford: If a vampire bites a charmed target, does that count as harmful, thus granting the target a new save against the charm?

— Jonathan Longstaff (@pukunui81) March 29, 2017

Dealing damage to someone is, indeed, harmful to them. #DnD https://t.co/lrrDPU74CO

— Jeremy Crawford (@JeremyECrawford) March 30, 2017

@JeremyECrawford quick question, ther spell Plant growth, how does that difficult terrain work with the druid land's stride ability

— Teddy Ferguson (@TeddyFerguson20) December 20, 2016

The plant growth spell doesn't create difficult terrain. Yet Land's Stride allows a druid to be unhindered by nonmagical plants. #DnD https://t.co/qABd2GK4bJ

— Jeremy Crawford (@JeremyECrawford) December 21, 2016

PC charmed by NPC: PC simply must Roleplay requests or NPC must before does social Ability Check with Advantage against PC? Any advice for us Master @JeremyECrawford?

— Draconis (@DerynDraconis) December 8, 2016

@DerynDraconis If it's a roleplaying situation, it's in the DM's hands. Hard to get more specific than that without knowing specific effects

— Jeremy Crawford (@JeremyECrawford) December 8, 2016

@JeremyECrawford to be specific:
1) Charm Person of an NPC on PC
2) NPC Vampire Charm on PC
NPC Adv social check on PC is required to obey?

— Draconis (@DerynDraconis) December 14, 2016

Charm person & the vampire's Charm ability say how the charmed target is affected. Any rolls beyond what's in the text are up to the DM #DnD https://t.co/wWaKT178RS

— Jeremy Crawford (@JeremyECrawford) December 18, 2016

@JeremyECrawford sorry if I don't understand the answer, but I ask this again because I would propose my new purchase to my group pic.twitter.com/jFNCv1fjF5

— Draconis (@DerynDraconis) December 18, 2016

@JeremyECrawford text doesn't call roll, thus no check by rules must be made to ask favors (Charm Person)/order to attack (Vampire Charm)?

— Draconis (@DerynDraconis) December 18, 2016

The vampire's Charm states that the charmed target isn't under the vampire's control but views the vampire in the most favorable light. #DnD https://t.co/OGIEfwHk9O

— Jeremy Crawford (@JeremyECrawford) December 18, 2016

A spell or other magical ability requires ability checks only if its text says so. #DnD https://t.co/OGIEfwHk9O

— Jeremy Crawford (@JeremyECrawford) December 18, 2016

I love you @JeremyECrawford Now I see difference between Vampire Charm and Enslave (target is UNDER THE ABOLETH'S CONTROL). I can RP Strahd!

— Draconis (@DerynDraconis) December 18, 2016

@JeremyECrawfordWhat happens when I cast Project Image, enemy targets my image with MM? Do missiles hit me, fail to cast, or strike image? My prediction is that Magic Missile would fail to cast.

— Eric Green (@quadhund) December 13, 2016

@quadhund Your prediction is correct.

— Jeremy Crawford (@JeremyECrawford) December 13, 2016