Master Mike realease the long awaited pdf to resolve large scale combat.
You can find the pdf here:
http://media.wizards.com/2015/downloads/dnd/UA_Battlesystem.pdf

Another Unearthed Arcana has released, this one covering mass battles in D&D. http://t.co/NQd457fNjE

— Mike Mearls (@mikemearls) March 2, 2015

 

These rules cover different aspect of war like

• Units, Solos and Commander
• Terrains and Morale
• Movement, Initiative and Actions
• Creating Objectives for your story

All these rules are in draft form and might be unstable. “They’re written in pencil, not ink.”

Are you ready to command your armies to Victory?

@xanderh2404Does the extra attack fighter feature gives you extra attacks for both main and offhand weapons when dual wielding? Thanks. Nope, just one extra attack. The offhand weapon requires a bonus action.

— Mike Mearls (@mikemearls) February 24, 2015

@DigitalXentricI feel somewhat dissapointed by the rules for crafting in the PHB. Is there going to be more source material for downtime? For more downtime options, check out the Dungeon Master's Guide. The book also gives advice on creating even more options.

— Jeremy Crawford (@JeremyECrawford) February 25, 2015

@newbiedm hey Rodney, Int checks would be catch all for monster lore recollection, right? Why left put of rules explicitly? If you want to allow it at your table, that's fine, but it's not something we expect to be universal.

— Rodney Thompson (@wotc_rodney) February 24, 2015

@newbiedm We didn't want there to be a default assumption that player characters can just automatically know things about monsters.

— Rodney Thompson (@wotc_rodney) February 24, 2015

@Thedeadlyginger @newbiedmI have thrown out 4e monster checks. I allow them to roll an INT check on dragons if they have a book on dragons. I, too, am more inclined to allow the check if there is an in-world justification beyond "I have a high Int."

— Rodney Thompson (@wotc_rodney) February 24, 2015

@terrywhisenantAre you saying “lore about the inhabitants of those planes” is a houserule?Or that the DM has to decide if there’s a DC or not. The DM has to decide what lore can be obtained through a simple check, and what lore must be obtained through other means.

— Rodney Thompson (@wotc_rodney) February 24, 2015

“@joleary97: what do you draw inspiration from when planning adventures/campaigns?” History is a huge inspiration. WWII, Ancient Rome, etc.

— Christopher Perkins (@ChrisPerkinsDnD) February 24, 2015

@calebrus44 @JeremyECrawford @mikemearlsIs poison applied to a weapon intended to last for the full minute, or until the weapon strikes? Lasts for the full minute.

— Rodney Thompson (@wotc_rodney) February 23, 2015

@wotc_rodney Implication: 20Ftr w/ +3 GSword + purple venom = 952d6+544 w/ ASurge, haste, reaction over 10 rds @zolt4r @JeremyECrawford

— calebrus44 (@calebrus44) February 23, 2015

@JeremyECrawford @wotc_rodney @mikemearls @zolt4r I’m not ready to give the official answer, since this is part of my potential-errata analysis. Fair enough.

— calebrus44 (@calebrus44) February 23, 2015

Sage Advice: You can check Poison basic rule in Player’s Handbook p.153 that only describes: “…the poison retains potency for 1 minute before drying.” In Dungeon Master’s Guide p.257 some poisons could be very lethal if last for 1 minute (10 rounds).

My advice is that applied poison last until the weapon strikes or 1 minute is passed.

@JRobsonSF @JeremyECrawford @mikemearlsDo invocations like “Mask of Many Faces” or “Myriad Forms” require vocal and somatic components? If a feature allows you to cast a spell, it still requires all components unless otherwise specified

— Rodney Thompson (@wotc_rodney) February 24, 2015

“@dakota_ferrel: hey Chris. Any tips for a first time DM?” Have fun. Don't let 'em see you sweat.

— Christopher Perkins (@ChrisPerkinsDnD) February 24, 2015