@_Matafer @JeremyECrawford Can a PC attack with a versatile weapon with one/two hands. Then a draw dagger, extra attack with other hand? I wouldn't allow it – you already used your two hands to attack.

— Mike Mearls (@mikemearls) March 23, 2016

@_Matafer @JeremyECrawfordIf you have extra attack. Can you hold a weapon in each hand to attack, and it not count as two weapon fighting yes

— Mike Mearls (@mikemearls) March 23, 2016

@_MataferSo I attack with my b-axe in one hand. Then use extra attack to use my dagger in other hand, and its not considered TWF, right? yes – that works because you are not gaining more than your usual number of attacks.

— Mike Mearls (@mikemearls) March 23, 2016

@_MataferSo if its effortless to drop weapon/switch hands. And you can draw as part of attack? It wouldn’t work? Just asking for player. yes – you've already committed to using a two-handed attack. can't then change to TWF

— Mike Mearls (@mikemearls) March 23, 2016

@Gareth101 @ChrisPerkinsDnDWizard Arcane Focus Q: if a diadem worn on forehead, is a free hand needed to touch or is body contact enough? intent is you touch it, but I;d allow it (I'm also not finicky about that kind of thing)

— Mike Mearls (@mikemearls) March 26, 2016

@JeremyECrawford Creatures that have a ability that says: "as concentrating on a spell" is there a different between it & real concentration

— René Christiansen (@Rugholm86) March 21, 2016

A creature can't concentrate on such an ability and a spell at the same time. #DnD https://t.co/d1rxh8SlSc

— Jeremy Crawford (@JeremyECrawford) March 29, 2016

@DaddyDM @JeremyECrawford What happens to a target of a Command spell if the command is “Die!”, do they act like they are dead? @ yeah, i'd have them drop to the ground and play dead

— Mike Mearls (@mikemearls) March 21, 2016

@BObrejan @JeremyECrawfordIf I have Haste on a teammate and use next Blink, do I lose the Concentration when applying the Blink effect??? nope

— Mike Mearls (@mikemearls) March 23, 2016

@kelben_guru @JeremyECrawford @ChrisPerkinsDnDone of my players (fighter) wants to train a animal pet (guard dog), how can he do this? i'd use downtime – maybe three months of training

— Mike Mearls (@mikemearls) March 23, 2016

@ProfSiccusDoes a Bladesinger need to have his or her weapon in hand in order to utilize the Bladesong ability? No.

— Jeremy Crawford (@JeremyECrawford) April 4, 2016

Bladesong doesn't require concentration. Its description would say if it did. #DnD https://t.co/7KtatKlOrR

— Jeremy Crawford (@JeremyECrawford) April 4, 2016

@JeremyECrawford Bladesong's description doesn't seem to say that the bladesinger must be wielding a weapon to invoke it; is one required?

— X (@x93temp) April 4, 2016

Bladesong doesn't require a weapon in hand. Its description would say if it did. #DnD https://t.co/DoSnYvbEcc

— Jeremy Crawford (@JeremyECrawford) April 4, 2016

@JeremyECrawford Can a diviner declare portent after the die has been rolled? Or only before? Thanks!

— Eugene Marshall (@eugenemarshall) March 24, 2016

Using Portent: "You must choose to do so before the roll" (PH, 116). #DnD https://t.co/JjEbngBkI3

— Jeremy Crawford (@JeremyECrawford) April 1, 2016

@JeremyECrawford Sorry, follow up: and does diviner's portent replace roll only or roll plus modifiers? Thanks again.

— Eugene Marshall (@eugenemarshall) March 24, 2016

A Portent roll replaces a d20 roll, not modifiers. #DnD https://t.co/yQ2qOJ9nt1

— Jeremy Crawford (@JeremyECrawford) April 1, 2016