@JeremyECrawford what is a "spellcaster"? as in "requires attunement by a spell caster, is it that anyone with spellcasting class feature?

— TK (@tk0004) February 13, 2017

The rule on attunement (DMG, 136) explains what "spellcaster" means. #DnD https://t.co/6PLaOtEs3a

— Jeremy Crawford (@JeremyECrawford) February 13, 2017

@JeremyECrawford from my read, I take it as "anyone with spell slots"

— TK (@tk0004) February 13, 2017

@tk0004 That's not what it says. See the sentence that begins "If the prerequisite is to be a spellcaster …"

— Jeremy Crawford (@JeremyECrawford) February 13, 2017

@JeremyECrawford Ah got confused by my first printing, the answer is in the errata.. thanks for your time!

— TK (@tk0004) February 13, 2017

@JeremyECrawford Can you concentrate on a spell whose active effects are on an other plane of existance? Flaming Sphere from Etherial Plane?

— Manuel (@Asmo1993) March 9, 2017

No general rule prevents you from concentrating on a spell across planar boundaries. #DnD https://t.co/fwUVQX6lHw

— Jeremy Crawford (@JeremyECrawford) March 10, 2017

@JeremyECrawford Does invisibility count as "total cover" for the purpose of a paladin's Divine Sense. I ruled "no," but thought I'd ask.

— Ed Robinson (@Lwnasidh) February 6, 2017

Invisibility doesn't count as cover. Cover = physical obstruction. #DnD https://t.co/vJKRoxfrfO

— Jeremy Crawford (@JeremyECrawford) February 6, 2017

@JeremyECrawford @ChrisPerkinsDnD Is commander's strike melee only or can spell attacks be used as well by the affected player?

— Dodge Howell (@tdhowell) February 28, 2017

Commander's Strike lets you grant a weapon attack to someone. The attack can be melee or ranged. A weapon attack isn't a spell attack. #DnD https://t.co/L5QmVFiF5G

— Jeremy Crawford (@JeremyECrawford) February 28, 2017

@JeremyECrawford what about a spell that makes a weapon attack such as blooming blade in the SCAG?

— Em Wizardshark (@emwizardshark) February 28, 2017

Making an attack ≠ casting a spell. #DnD https://t.co/p5rxqKf4k8

— Jeremy Crawford (@JeremyECrawford) February 28, 2017

@flux_fidelbummCreature enters area of Insect Plague on it’s turn, takes damage, then ends turn in the area. Does it take damage again? Yes.

— Jeremy Crawford (@JeremyECrawford) January 31, 2017

@pukunui81 Shillelagh + Polearm Master: would the dmg for the extra attack with a staff still be a d4 or would it be a d8? A d4.

— Jeremy Crawford (@JeremyECrawford) January 31, 2017

@pukunui81OK. Would you still get to use Wis for atk/dmg, though? Yes.

— Jeremy Crawford (@JeremyECrawford) January 31, 2017