@JeremyECrawford How does multiple attacks by one player in one turn both doing more than 25 damage work in regards to a Hydra in 5e?

— Jason (@JasonTDnDDm) May 30, 2017

The hydra's Multiple Heads trait means the hydra loses no more than one head per turn that it takes 25 damage or more. #DnD https://t.co/66VB5718UE

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

@JeremyECrawford Mr. Crawford, I'm confused about Reactive Heads. If a player provokes an OA from a Hydra, can it atk them with every head?

— Teeleh (@TeeIeh) June 1, 2017

A hydra can have more reactions than normal, but it doesn't change how an opportunity attack works: one attack per opportunity attack. #dnD https://t.co/YunwmcT1Tr

— Jeremy Crawford (@JeremyECrawford) June 1, 2017

Hi Jeremy, if a creature has damage immunities except to adamantine weapons can it also be affected by magic weapons?Which creature are you referring to?

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

We were looking specifically at iron golems but is there ever a time when adamantine trumps magic weapons?

— Randy Nickel (@Snick3) May 30, 2017

There is no general rule about adamantine weapons. A stat block says how they work on that creature, if at all.

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

I take that to mean that against an iron golem magic weapons are resisted but adamantine bypass the resistance

— Randy Nickel (@Snick3) May 30, 2017

An iron golem is not immune to the bludgeoning, piercing, or slashing damage of a magic weapon. #DnD https://t.co/zeS0ahm55t

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

An iron golem's immunity to bludgeoning, piercing, and slashing damage is bypassed by magical attacks and by adamantine weapons. #DnD https://t.co/Dw5Hegt1dA

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

@JeremyECrawford PC failed save after bitten by lycanthrope, would they know they were cursed? as DM, would you roll the save secretly? #DnD

— VampireCabbage (@VampireCabbage) April 26, 2017

As DM, you decide how much a character knows. Knowing that you're cursed can spawn a quest. Not knowing is a nice recipe for horror. #DnD https://t.co/CDzwbCbgFI

— Jeremy Crawford (@JeremyECrawford) April 26, 2017

If I cast Charm Person on a target and you cast the same spell on the same target what happens? Combining Magical Effects? The rule in "Combining Magical Effects" applies.

— Jeremy Crawford (@JeremyECrawford) June 6, 2017

@JeremyECrawford Mr. Crawford. All the Hags from MM and Volo's Guide are fey except Night Hag, which is fiend. Why this hag is different?

— André Higuti (@artsbyjapao) June 2, 2017

Night hags were once creatures of the Feywild that degenerated into fiends, as stated in their description in the Monster Manual. #DnD https://t.co/VjPlhvluFQ

— Jeremy Crawford (@JeremyECrawford) June 3, 2017

@JeremyECrawford Hi, I had a disagreement about Legendary Resistances. Are Legendary Resistances considered separate from Legendary Actions?

— Wyatt Lyter (@WkLyter) May 30, 2017

Legendary actions are under the "Legendary Actions" heading in a stat block. The Legendary Resistance trait doesn't appear under it. #DnD https://t.co/mcS2HKmD2v

— Jeremy Crawford (@JeremyECrawford) May 30, 2017

@JeremyECrawford Magic Aura spell states that it works against Divination spells. Example (Symbol) is Abjuration. Can you explain?

— DH (@HatleyD) April 21, 2017

In all D&D rules, the specific/exceptional overrides the general. If one contradicts the other, the specific/exceptional always wins. #DnD https://t.co/xjFjbzQx9B

— Jeremy Crawford (@JeremyECrawford) April 21, 2017

#DnD @JeremyECrawford @ChrisPerkinsDnD If grappling is opposed STR/DEX check why some monsters have escape DC? ie. Tree Blight #CoS

— The October Geek (@mjsoctober) May 23, 2017

The introduction to the Monster Manual explains how to read a stat block, including how monsters grapple (see p. 11). #DnD https://t.co/CGYl0WwByG

— Jeremy Crawford (@JeremyECrawford) May 23, 2017

@mjsoctoberBeen playing #DnD for 30 yrs. Know how to read a stat block, thanks. I’m asking why monsters in 5e grapple differently from PCs. Why not 1/2 That's a different question, indeed. Before I proceed, have you read "Grapple Rules for Monsters" (MM, 11)?

— Jeremy Crawford (@JeremyECrawford) May 23, 2017

@mjsoctober Yes read it & see from your other reply it is basically to speed up play. Good to know. I will use opposed checks when I DM. TY for reply. Controlling the DC is just as important to the design.

— Jeremy Crawford (@JeremyECrawford) May 23, 2017

@JeremyECrawford In other words, what was the design reason? To make it easier? Opposed rolls would be more dramatic.

— The October Geek (@mjsoctober) May 23, 2017

Monsters typically use escape DCs for their exceptional grappling abilities so that we can control the DCs and speed up play. #DnD https://t.co/xEoO9rFKHl

— Jeremy Crawford (@JeremyECrawford) May 23, 2017

@armando_doval @mjsoctober To be super clear: monsters don’t grapple differently from PCs. They can still grapple “normally” by taking the Attack action. That's correct, Armando.

— Jeremy Crawford (@JeremyECrawford) May 23, 2017

@mjsoctober @SlyFlourish @JamesIntrocasoBeen having debate with @JeremyECrawford re Escape DCs for monsters that grapple. Interested in your take. 1/2 To be clear, I'm not debating with you. I briefly explained the design. I encourage you to tinker with the rules however you like.

— Jeremy Crawford (@JeremyECrawford) May 23, 2017