@JeremyECrawford @mikemearls since Compulsion doesn't work on creatures who are immune to charms does it count as a charm spell?

— Nick Robertson (@BeautyByNick) September 13, 2017

"Charm spell" has no meaning in the rules. A spell refers to the charmed condition if that condition is relevant. #DnD https://t.co/fhQIydfMTA

— Jeremy Crawford (@JeremyECrawford) September 13, 2017

So it doesn’t create the charmed condition but creatures that are immune to the condition are immune to the spell for some reason?That's correct.

— Jeremy Crawford (@JeremyECrawford) September 13, 2017

No problem!

— Jeremy Crawford (@JeremyECrawford) September 13, 2017

how about the bard's instruments. they give disadv on saves vs charm, only against the condition or all spells that mention charming?

— cobus belterman (@CobusBelterman) September 13, 2017

Instrument of the bards benefits a spell "that causes targets to become charmed on a failed save" (DMG, 176). Charmed—the condition. #DnD https://t.co/vGrKCLXgdD

— Jeremy Crawford (@JeremyECrawford) September 13, 2017

my bard has the bandalore and now I’m thinking I might have been cheating with hypnotic pattern 😰 Hypnotic pattern imposes the charmed condition, as stated in its text.

— Jeremy Crawford (@JeremyECrawford) September 13, 2017

@JeremyECrawford
A interrupts with Counterspell an ongoing spellcasting process of B (requires longer casting time), B losts his spell slot?

— Draconis (@DerynDraconis) November 6, 2017

A successful counterspell causes a spell to fail, regardless of that spell's casting time. The thwarted spell's slot, if any, is spent. #DnD https://t.co/KVVVU59D77

— Jeremy Crawford (@JeremyECrawford) November 7, 2017

@JeremyECrawford I was hoping you could tell me if “Colossus Slayer” has an implied size stipulation? If not, why is it called that?

— Michael Morrison (@MikeVorpal) October 12, 2017

The descriptions of class features and spells tell you how they work. Their names are sometimes metaphorical. #DnD https://t.co/Pekca6apWF

— Jeremy Crawford (@JeremyECrawford) October 12, 2017

But there isn’t even a ‘colossal’ size category. I wasn't going to say it. 😉

— Jeremy Crawford (@JeremyECrawford) October 12, 2017

So it works on every creature then? You should have named it “predatory strike” or something. Or is the Ranger the “colossus” here? pic.twitter.com/DQfy7O4V1b

— Michael Morrison (@MikeVorpal) October 12, 2017

It does, indeed, work on a creature of any size. The first sentence of the feature's description helps elucidate the metaphorical name.

— Jeremy Crawford (@JeremyECrawford) October 12, 2017

Since you asked nicely, OK. I wasn’t trying to be confrontational, I am actually curious as to why it is named that 1) "Colossus" can refer to importance/ability/size. 2) If you can wear down the most potent foe, you can likely wear down the weak one.

— Jeremy Crawford (@JeremyECrawford) October 12, 2017

@JeremyECrawford Does Charm Person spell ends if Polymorph is cast on the charmed humanoid? Or does Polymorph suppress the spell called Charm Person until the human form returns?

— Draconis (@DerynDraconis) November 17, 2017

There's no rule governing what happens when a valid spell target temporarily becomes an invalid target. A good rule of thumb is that the spell is suppressed while the target is invalid. #DnD https://t.co/C4XCgFwMkE

— Jeremy Crawford (@JeremyECrawford) November 17, 2017

@JeremyECrawford Player just got back to me. "Then why does a Rust Monsters attack dmg Adamantine per it's description? if it's magical it should be omitted from the substances a rust monster dmgs."

— Kantrism (@Kantrism) November 8, 2017

Adamantine is a metal. The object called adamantine armor in the magic item section of the Dungeon Master's Guide is a magic item that incorporates that metal. #DnD https://t.co/3n9ttt7YyW

— Jeremy Crawford (@JeremyECrawford) November 8, 2017

Does using an improvised weapon in certain ways impart properties to it? For instance, does throwing a rock give the rock the Thrown property?

— DanDanFielding (@DMdandanfieldng) November 22, 2017

Using an object in a certain way doesn't impart any weapon properties to it. Those properties are game features. An object has such properties only if a rule or the DM says it does. #DnD https://t.co/evGTFCXIuM

— Jeremy Crawford (@JeremyECrawford) November 22, 2017

I’m so glad you had relationship! She sounds great. Jokiness retracted.I liked the joke! I'm just the unusual person with the grandma who'd get it. 😀

— Jeremy Crawford (@JeremyECrawford) November 23, 2017