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One DnD Rules FAQ: Fast Answers for Dungeon Masters

Updated: Apr 14, 2023


A Dragon who is a Dungeon Master runs a game of One DnD.

There Are A Lot of One DnD Rule Changes to Keep Track Of. So We Compiled Answers to the Most Common Questions that Come Up During a Game.


Nothing is worse than having to slow down a game to look up a rule. Dungeon Matters is all about great DMing, and that means keeping your players engaged and in the moment.


That's why we say when in doubt make the call. Decide the rule on the fly, then look it up later when the action has slowed down. But if you need the right answer fast, we've compiled a quick list of the most common questions and answers that come up about One D&D rules so you can get answers and get back in the game.


Questions About Combat Rules in One D&D


Can a player use a shield without Armor Training?

Yes, but it does you no good. if you don't have armor training with a shield, you do not get the bonus to your armor class when using it.


Does it require an Action to Pick Up a Dropped Weapon?

No. You can pick-up or draw one weapon before or after your attack as part of the Attack Action. However if you already drew a weapon, you couldn't pick up another one and attack.


If a character or creature has multiple attacks can they move in-between attacks?

Yes. If you can move on your turn and you have a feature that gives you multiple attacks, you can use some or all of your movement between attacks.


Can you help another player with an attack role in One DnD?

Yes. It requires you to use your action, so you won't be able to attack on your turn even if you have multiple attacks. However, you can still use bonus actions and reactions. The creature must be within 5 feet of you. You distract it and any other player can then attack with advantage until the start of your next turn.


In One DnD do you have to make an attack roll to grapple someone or hit them with an attack?

No. The person being grappled must make an athletics or acrobatics check (their choice) with a DC of 8 + your strength mod + plus your proficiency bonus.


Do you get to take a short rest when knocked unconscious?

When you are revived, if you have been out for at least 1 hour, you gain the benefits of a short rest.


What happens if you are surprised?

The creature that successfully surprises a foe gets advantage on their initiative roll.



One DnD Rule Questions About Exhaustion


What's the penalty for exhaustion?

Exhaustion rules have been significantly improved for One DnD. Subtract your exhaustion level from D20 tests and the Spell Save DC of any spells you cast. If your exhaustion level exceeds 10, you die.


Do you make Death Saves if you die from exhaustion?

No. Death saves occur when you have the Dying condition from dropping to zero hit points. If you get more than 10 levels of exhaustion, you aren't dying, you're dead.


How do you recover from exhaustion

You remove one level of exhaustion after a long rest.


One DnD Rule Questions About Sight


Can you see Invisible creatures with Blind Sight?

Yes. With Blindsight, you can effectively see any invisible creature that isn't also hiding behind total cover.


Is Devil Sight Darkvision?

No, unlike Darkvision, Devil Sight lets you see in magical darkness.


One DnD Questions About Monsters


What Are the Different Creature Types on One DnD?

  • Aberration

  • Beast

  • Celestial

  • Construct

  • Dragon

  • Elemental

  • Fey

  • Fiend

  • Giant

  • Humanoid

  • Monstrosity

  • Ooze

  • Plant

  • Undead


One DnD Questions About Getting Knocked Unconscious and Dying


How do death saving throws work?

  • Roll a d20 on each of your turns.

  • If it is 9 or less you fail. If it is 10 or more you succeed.

  • Three failures = Death.

  • Three Successes = Unconscious .

  • If someone heals you at least one hit point before you get three failures, you stabilize and can stop making death saves.

  • Each time you take damage while dying you get one failure.

  • A critical hit counts as two failures.

  • If you roll a one on a death save it counts as two failures.

  • If you roll a 20 you wake up.


One DnD Rule Questions About Magic


In One DnD can you cast a spell while taking a short or long rest?

No, unless it is a zero level spell. If you cast a spell of level 1 or higher you lose the benefits of your rest. Of course nothing stops you from casting the spell immediately before or after the short rest.


Does Teleporting Trigger an Attack of opportunity

No. You can magically teleport yourself without incurring an attack of opportunity.


One DnD Rule Questions About Movement


How far can you leap without taking the Jump action?

You can leap 5 feet horizontally or vertically as part of regular movement. Also if you fail your Jump check, you still travel 5 feet.


How far do you travel when you take the Jump action?

If you succeed on a DC 10 check, you travel the amount of your die roll horizontally, or half that number vertically. But you can't leap. further than your speed.


Can you move through a space occupied by another player when moving?

Yes. As long as that player isn't hostile toward you, then their size doesn't matter, you can move through their space at full speed, but you can't willingly end your turn in a space they occupy.


What's the Difficulty for the Dexterity Check to Hide?

DC 15. Make a DC 15 Dexterity (Stealth) check. On a success

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