@Mazdakgdoes Bracers of Defense stack with Mage Armor? Thanks! don't believe so. AC buffs only if they are expressed as a bonus (+2 to AC), rather than a formula or number (AC 13 or AC 12 + Dex)

— Mike Mearls (@mikemearls) February 2, 2016

@JeremyECrawford If you throw a Dagger at someone as the only weapon you had in hand, does the boost from the Duelist fighting style apply?

— Shawbucks (@Lulcal) February 4, 2016

As DM, I allow the Dueling fighting style to work when you throw a dagger. #DnD https://t.co/lKBQ9pnRZT

— Jeremy Crawford (@JeremyECrawford) February 4, 2016

@mikemearls Can you cast Spare the Dying on an NPC to stabilize them? Like an enemy goblin that was brought to 0 hp? #dnd

— Pandantic (@Pandantix) January 30, 2016

Yes, though the DM might rule the creature is immediately dead at 0. See PHB page 198. https://t.co/Qldlj3NkkM

— Mike Mearls (@mikemearls) January 30, 2016

@JolfeWHi! Scroll confusion! DMG says must be on your spell list. DM Basic Rules says can cast not on spell list with DC 10+level? The text in the Basic Rules is from the DMG (p. 200–1).

— Jeremy Crawford (@JeremyECrawford) February 9, 2016

@MentalburnoutThe sleep spell says “a point you choose in range.” Can a player place the spell past a wall to miss allies? you still need to be able to see the point.

— Mike Mearls (@mikemearls) February 10, 2016

@JeremyECrawford Can Empowered Spell affect all bolts of Scorching Ray, or just one? (Sorry if already answered, couldn't find anything.)

— Dan Glading (@danglading) February 16, 2016

A sorcerer's Empowered Spell could affect more than 1 ray in scorching ray, abiding by the feature's die limit. #DnD https://t.co/Jon72aIKqn

— Jeremy Crawford (@JeremyECrawford) February 18, 2016

@SageAdviceDnD @ChrisPerkinsDnD @mikemearls As DM how can I know if a combat alerts nearest encounters in a dungeon? How far goes the sound?

— Marc-Olivier Noël (@marcolivier_n) January 28, 2016

I actually had trouble research sound in terms of distance. I'd alert anything within 30 feet, DC 15 from 30 – 60. https://t.co/2nduOi45dQ

— Mike Mearls (@mikemearls) January 29, 2016

Epic @marcolivier_n for a grognard like me the answer is https://t.co/xwsnFTJFrI Page 28 "Sound Analysis" @ChrisPerkinsDnD @mikemearls

— Zoltar Sage Advice (@SageAdviceDnD) January 28, 2016

@JeremyECrawford @mikemearlscan you combine spell sniper, war caster, and polearm master with booming blade for attacks of opportunity? By the RAW, my brain wants to say that it works, but I was wondering what the official ruling is

— Nathaemius Varrowe (@dmvarrowe69) January 29, 2016

@dmvarrowe69 @JeremyECrawford spell sniper wouldn’t apply to booming blade. the spell is not an attack – it’s a rider on a melee attack.

— Mike Mearls (@mikemearls) January 29, 2016

@dmvarrowe69 @JeremyECrawford war caster does work, as I read it. Jeremy will know for sure.

— Mike Mearls (@mikemearls) January 29, 2016

@dmvarrowe69 @JeremyECrawford polearm master would not work at 10 feet, since spell sniper does not extend the spell’s range.

— Mike Mearls (@mikemearls) January 29, 2016

@dmvarrowe69 @JeremyECrawfordThe text says “When you cast a spell that requires you to make an attack roll, the spell’s range is doubled.” actually, I take those back – overlooked the "must" in booming blade, so that chain should work.

— Mike Mearls (@mikemearls) January 29, 2016