Polymorph says you can’t cast spells while in beast form. Does that mean you also can’t concentrate on them?

@ktkenshinxPolymorph says you can’t cast spells while in beast form. Does that mean you also can’t concentrate on them? you can still concentrate

— Mike Mearls (@mikemearls) October 21, 2014

@ktkenshinxPolymorph says you can’t cast spells while in beast form. Does that mean you also can’t concentrate on them? The polymorph spell doesn’t interrupt the concentration of its target.

— Jeremy Crawford (@JeremyECrawford) October 21, 2014

@AramalianDo the AC bonuses from Ring of Prot (DM Basic) and Bracers of Defense (HotDQ supp) stack or overlap? The AC bonuses from those two magic items stack.

— Jeremy Crawford (@JeremyECrawford) November 7, 2014

@FallenAkrielIs transmutation spell Alter Self lvl 2 allow to change gender for duration? They say yes to race, so would seems similar I would allow a character to assume a different gender with the alter self spell.

— Jeremy Crawford (@JeremyECrawford) September 10, 2014

@PopeJewishIf I’m using a spell that require concentration, can I cast other spells or cantrips or will that break the concentration? While concentrating on a spell, casting another spell doesn’t break your concentration unless the second spell also requires it.

— Jeremy Crawford (@JeremyECrawford) April 11, 2015

@JeremyECrawford One of my players recently mentioned that his philosophy on D&D mechanics is that “the system is meant to be broken,” which can be frustrating for me at times. As one of the key people behind creating these mechanics, how do you feel about this philosophy?

— Ned Wilcock (@NeddyRoosevelt) May 11, 2020

The rules of D&D are a toolbox, and each group decides how to use the tools within, ideally in a way that heightens the group's fun. If abiding by the rules is your bliss, follow them. If changing them is your jam, tweak them. If you prefer a middle path, happily walk it. #DnD https://t.co/4TmDMjremF

— Jeremy Crawford (@JeremyECrawford) May 12, 2020

@jaa0109 Is a Monk’s Unarmed Strike a Finesse weapon? Can’t seem to find it listed anywhere. Curious about Sneak Attacks The monk's unarmed strike doesn't count as a finesse weapon. @mikemearls

— Jeremy Crawford (@JeremyECrawford) November 26, 2014

@Brail4 @mikemearls @ChrisPerkinsDnDChain warlocks familiars…willing servants that can leave, or bound creatures that cant? A warlock's familiar is summoned using the find familiar spell and always obeys the warlock's commands.

— Jeremy Crawford (@JeremyECrawford) November 5, 2014

@AnonVonZilchWould a swarm of quippers count as one or multiple fish when it comes to things like the trident of fish command? A swarm is a collection of creatures, so a swarm of quippers counts as multiple fish.

— Jeremy Crawford (@JeremyECrawford) January 6, 2015