@JeremyECrawford Can a Cleric use Channel Divinity while bound and gagged? Question pertinent to a present situation.

— The Hu-Bear (@Inpheksion) February 4, 2018

Some Channel Divinity options describe things you must do to use them, such as brandishing a holy symbol or shouting something. If an option doesn't include such requirements, enjoy the liberty! #DnD https://t.co/jeOwa98JBV

— Jeremy Crawford (@JeremyECrawford) February 4, 2018

@JeremyECrawford You said that if a spell does not say something happens it doesn't happen so with true polymorph/polymorph which says personality and alignment are retained, it doesn't mention memory. So this means a creature loses it's memories when transformed?

— Sean Stanley (@SeanPWStanley) February 7, 2018

A spell doesn't erase/suppress your memories unless the spell's text says it does.

When the text of a spell, like polymorph, says you retain your personality after a transformation, that's a terse way of saying, "You're still you, despite the radical changes you undergo." #DnD https://t.co/h6q66O5F6q

— Jeremy Crawford (@JeremyECrawford) February 8, 2018

Could a creature possibly Hold their Legendary Action?

Legendary actions can be taken only at the end of someone else's turn. #DnD https://t.co/h2EWxNcHsb

— Jeremy Crawford (@JeremyECrawford) January 11, 2018

I thought it was beginning or end?Only at the end

— Jeremy Crawford (@JeremyECrawford) January 11, 2018

@JeremyECrawford Good Afternoon, I was hoping you could help solve an issue that’s arisen in my game.
I’ve just given the Druid a Staff of the woodlands which can use an action to cast Awaken, but Awaken takes 8 hours… which is it?
Thanks for your swift reply!

— Ash (@AshKneller) February 18, 2018

The staff of the woodlands allows you to cast the awaken spell as an action, superseding the spell's normal casting time of 8 hours. Some magic items make exceptions like that, as noted on page 141 of the Dungeon Master's Guide (see the "Spells" section on that page). #DnD https://t.co/MEOIlUohL1

— Jeremy Crawford (@JeremyECrawford) February 19, 2018

Thanks for taking the time! You’re as handsome as you are kind. Aw. ☺️

— Jeremy Crawford (@JeremyECrawford) February 19, 2018

Hey Jeremy! I believe you just contradicted the DMG in this tweet, and would love to get more insight. On page 141, it says that when magic items allow the user to cast a spell from them, the spell uses its normal casting time. "Certain items make exceptions to these rules, changing the casting time, duration, or other parts of the spell" (DMG, 141).

— Jeremy Crawford (@JeremyECrawford) March 14, 2018

@JeremyECrawford a player shoots a fireball into a bunch of goblins who happened to have a nilbog with them. Does the fireball trigger nilbogism and save all the goblins ?

— Luc Charette (@DnDPaladin) February 22, 2018

If you try to deal damage to a nilbog by any means (a weapon, spell, or something else), Nilbogism is triggered. If you're unaware of a nilbog's presence and the creature is inadvertently caught in an area of effect you create, you're not subject to Nilbogism. #DnD https://t.co/OTIj4pqM1P

— Jeremy Crawford (@JeremyECrawford) February 23, 2018

@JeremyECrawford Concerning the Half Dragon Template, if applied to a beast does it stay a beast or become a monstrosity?

— Robert (@NozzaLevene) December 19, 2017

The half-dragon template doesn't change a creature's type. #DnD https://t.co/0FuIcdrzD0

— Jeremy Crawford (@JeremyECrawford) December 19, 2017

@JeremyECrawford Can a creature with multiple speeds choose which one to use to stand up from prone? e.g. Can a creature with 0 walking speed, or higher walking speed than flying speed, choose to stand using their flying speed?

— Armando Doval (@armando_doval) February 4, 2018

The rule on standing up from prone fails to account for you having multiple speeds. Here's the intent: if you have multiple speeds and stand up, expend an amount of movement equal to half your highest speed. #DnD https://t.co/bIsUZRdk0W

— Jeremy Crawford (@JeremyECrawford) February 4, 2018

That ruling still leaves room for gaming the system if you have a speed that is five to ten feet higher than another somehow. Spend half your walking movement (35 ft) and still have 30 ft of flight movement. I would just halve all speeds for getting up from prone. That scenario is covered by the rule on using multiple speeds.

— Jeremy Crawford (@JeremyECrawford) February 4, 2018