@JeremyECrawford What happens to a Drow poisoned weapon if a PC takes it after battle? How long does Drow poison remain on a blade?

— BJ Nemeth (@BJNemeth) April 20, 2016

The DM decides if a monster's equipment is usable by someone else and how that gear functions (see MM, 11). #DnD https://t.co/qop4MVtltx

— Jeremy Crawford (@JeremyECrawford) April 27, 2016

Frost Salamander
Frost salamanders are natives of the a&afga, the Plane of Ice that rests between the Plane of Air and the Plane of Water. Frost salamanders hunt by detecting the heat of other creatures. They sometime travel to the frigid climes of the world by wandering through planar gates, drawn by the (relative) warmth of a terrestrial, cold region. Frost salamanders’ aggression towards heat leads them to attack settlements on the frontier. They can mistake the heat of a forge or a campfire as a large, tasty meal, drawing them to attack expeditions and settlements that other predators would avoid.
Frost Salamander Huge monstrosity, unaligned
Armor Class 17 (natural armor) Hit Rojas 168 (16d12 + 64) Speed 60 ft., burrow 40 ft., climb 40 ft.
SIR DEX CON INT WIS CHA 20 (+5) 12 (+1) 18 (+4) 7 (-2) 11 (+0) 7 (-2)
Saving Throws Con +8, W,U+4 Damage Vulnerabilities fire Damage Immunities colcl Skills Perception +4 Senses gprjajp,a60 ft., t,,gagn.60 ft., passive Perception 14 Languages Primordial Challenge 9 (5,000 XP)
Burning Fury. When this creature takes fire damage, its breath weapon automatically recharges.
Actions
taltgagA, The frost salamander makes three attacks, 5c0 claws and one bite. flaw. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 4) piercing damage. Bite. Melee Weapon Attack: +9 to hit, reach 15 ft., one creature. Hit: 9 (1d10 + 4) piercing damage and 11 (2d10) cold damage. Freezing Breath (Recharge 6). The frost salamander opens a nexus to the ,ggfellin its gullet and unleashes a blast of utter cold that can flash freeze and kill. The wind is a 60-foot cone. Each creature in the cone must make a DC 17 Constitution saving throw, taking 44 (8d10) cold damage on a failed save, or half as much (22) on a successful one.
Here's a creature I homebrewed for my campaign. pic.twitter.com/hhxlTecFmF

— Mike Mearls (@mikemearls) April 22, 2016

@JeremyECrawford If a creature, i.e. construct, is immune to psychic damage, does Vicious Mockery still impose DIS on next att on a fail?

— Travis Biggers (@TBiggs89) April 20, 2016

Vicious mockery: the second effect isn't reliant on the psychic damage getting through. #DnD https://t.co/c8eXaES0OT

— Jeremy Crawford (@JeremyECrawford) April 27, 2016

@Ophannin117But the creature still has to fail its save to be at disadvantage, right? Yes.

— Jeremy Crawford (@JeremyECrawford) April 28, 2016

@Ophannin117 I'm happy to be of help!

— Jeremy Crawford (@JeremyECrawford) April 28, 2016

@JeremyECrawford Does a Spiritual Weapon attack get Adv, DisAdv, or n/a to hit rolls if the caster is over 5ft away from a prone target?

— Jeremy Wilson (@Mountainlion81) April 13, 2016

Yes. The spellcaster is the attacker with spiritual weapon—the one doing the targeting. #DnD https://t.co/yrrhToZPLa

— Jeremy Crawford (@JeremyECrawford) April 20, 2016

@ChrisPerkinsDnD How do I know if the adventure I'm writing is too long or too short? Is there some way to somehow "control" the time?

— Tirada de Salvación (@TiradaSalvacion) April 5, 2016

You can playtest it or ask another DM to playtest it for you. https://t.co/7hG3VvzPy7

— Christopher Perkins (@ChrisPerkinsDnD) April 5, 2016

@JeremyECrawford @mikemearls Can dispel magic end a prismatic wall and all of it's effects with one casting of dispel magic?

— Bryan Geek (@Gilwenlive) April 18, 2016

Only the violet layer of prismatic wall is affected by dispel magic and only after the other layers are gone. #DnD https://t.co/GQtAjtCNTd

— Jeremy Crawford (@JeremyECrawford) April 22, 2016

@ChrisPerkinsDnD Running PotA. Just curious, what advice might you have for when players go into a keep 2+ levels above them?

— Clint Oliver (@Malchior_) April 18, 2016

I wouldn't do anything other than keep avenues of escape open, should the party need to retreat. https://t.co/jxzgOU3scT

— Christopher Perkins (@ChrisPerkinsDnD) April 18, 2016