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75 votes
Accepted

Does advantage negate disadvantage (for things such as the rogue's Sneak Attack)?

Yes, advantage would negate disadvantage for purposes of Sneak Attack. According to the rules on advantage and disadvantage (PHB 173, emphasis mine): If circumstances cause a roll to have both ...
Bloodcinder's user avatar
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66 votes
Accepted

Do monks have an off hand and disadvantage attacking with it?

No. There is no handed-ness in D&D, so characters do not have a dominant and weak hand. (Unless the player narrates them as such) In addition, even when wielding two weapons, you don't have ...
Erik's user avatar
  • 81.4k
63 votes
Accepted

How does the Drow House Captain's whip attack work?

The Beatings Will Continue Until Morale Performance Improves It does exactly what it says it does. The Drow House Captain can attack an ally with the whip, and that ally gains advantage to attack ...
T.J.L.'s user avatar
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62 votes
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Is it okay to roll multiple attacks that all have advantage in one cluster?

Rolling 12d20 and taking the 6 highest is not equivalent Taking the 6 highest rolls out of 12d20 is not equivalent to 6 attacks with advantage. It is significantly better. I could lay out the ...
Ryan C. Thompson's user avatar
61 votes
Accepted

Is it better to dash or dodge across an open field?

There's a third option - and it's potentially much better The other answers have dealt capably with your 1 vs. 2 scenario already. To recap what's been established elsewhere: Dodge every round - ...
Tiggerous's user avatar
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56 votes
Accepted

Since advantage and disadvantage caused in a heavily obscured area cancel out, what effect does it have in combat?

It levels the playing field Casting darkness will cancel out both advantage and disadvantage, due to the way they stack. If your opponent has advantage and you have disadvantage, then cancelling both ...
Adeptus's user avatar
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56 votes
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Does a creature with blindsight have disadvantage when attacking an invisible target?

The Special Sense Blindsight bypasses the mechanics of being Invisible The Invisible condition states (emphasis mine): An invisible creature is impossible to see without the aid of magic or a special ...
NotArch's user avatar
  • 125k
55 votes
Accepted

Is it possible to gain the benefits of lying prone without incurring disadvantage on attacks? If so, is this broken?

You are describing a sound tactic (in the game and in the real world) It has been said that the goal of military action is to take a fair fight, and make it unfair. Most of martial history, from drone ...
Gandalfmeansme's user avatar
54 votes
Accepted

If I have both advantage and disadvantage, and my target has the Elusive rogue class feature, do I have disadvantage on the attack?

The attacking enemy has disadvantage on the roll. The relevant quote from the PHB is here: If circumstances cause a roll to have both advantage and disadvantage, you are considered to have ...
DuckTapeAl's user avatar
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52 votes
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What are my chances of rolling a natural 19/20 critical if I roll 3d20?

About 27%, or a little over 1/4 This is a pretty easy calculation to run in anydice: As you can see, the percentage chance of rolling at least a 19 one of the d20 rolls is 27.10% So you can expect, on ...
Adam's user avatar
  • 26.6k
52 votes

Would this house-rule that treats advantage as a +1 to the roll instead (and disadvantage as -1) and allows them to stack be balanced?

This is going to be difficult to balance Having advantage on a roll is roughly equal to having +5 to your roll, and having disadvantage is roughly equal to having -5 on your roll, as suggested by ...
Theik's user avatar
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50 votes
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Mathematically, is a +2 bonus to AC better than attackers having disadvantage?

In this case, the Cloak is better To explain this, let's first look at some stats. When no bonuses are involved, the Chances of rolling a 20 normally is 5% (1/20), while the chance for rolling 18 or ...
SeraphsWrath's user avatar
  • 7,438
48 votes

Is a character swallowed by a giant toad considered "unseen" on an attack against the toad, granting advantage (which cancels out disadvantage)?

Neither advantage nor disadvantage As you say, you have several sources of disadvantage and one source of advantage - being unseen. These cancel, leaving you with neither. Even if you don’t ...
Dale M's user avatar
  • 212k
48 votes

Is it possible to gain the benefits of lying prone without incurring disadvantage on attacks? If so, is this broken?

This is possible and not broken No part of the rules prevents the scenario you've described so it does work. Now let's address why it isn't as strong as you think: This requires a very specific kind ...
Exempt-Medic's user avatar
  • 76.2k
47 votes

Since advantage and disadvantage caused in a heavily obscured area cancel out, what effect does it have in combat?

If you cannot see your opponent then you cannot use any spell or feature that says "that you can see". For example, you cannot: Use Protection fighting style. Use Uncanny Dodge. Make Opportunity ...
Greenstone Walker's user avatar
46 votes
Accepted

Can the Fog Cloud spell effectively increase archer range by canceling disadvantage at long range?

Yes, that is the rules-as-written. It's worth noting, additionally, that there's actually no need for the archer to step out of the fog cloud in most circumstances: despite being effectively blinded, ...
Xirema's user avatar
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46 votes
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What is the statistical difference, if there is one, between attacking twice (action and bonus action) and attacking once with advantage?

It depends on your situation (typically, getting Sneak Attack is key) Let's get something out of the way first: in the simple analysis, attacking twice is usually much better than attacking once with ...
Gandalfmeansme's user avatar
45 votes
Accepted

What issues could arise with this Advantage/Disadvantage Variant?

It complicates what is intentionally simple. One of the aims of the advantage/disadvantage system is to remove the payoff for "bonus-scrounging". It isn't desirable to have your players ...
Darth Pseudonym's user avatar
45 votes

A player rolls several 20-sided dice, takes the lowest value, ignores the rest. What is the probability of this value being at least 7?

AnyDice is straight forward for this If you want to save yourself going through the maths, AnyDice will solve this for you. While doing more complex things can get tricky (up to not possible), it's ...
Someone_Evil's user avatar
  • 48.5k
44 votes

Is it better to dash or dodge across an open field?

Depends on the probability of your enemies hitting you with an attack. If you Dodge, the damage you take, on average, is given by the probability p of hitting you (squared because of disadvantage) ...
BlueMoon93's user avatar
  • 46.6k
43 votes
Accepted

Can a kenku wizard use Expert Forgery when copying a spell scroll into their spellbook?

Your ruling is unlikely to break anything. However, the rules on their own (and the underlying fictional significance of the rules) appear to answer this with a No. The surface rules difficulty is ...
SevenSidedDie's user avatar
43 votes
Accepted

A player rolls several 20-sided dice, takes the lowest value, ignores the rest. What is the probability of this value being at least 7?

Use a Tree Diagram Because I am bad at remembering formulas and bad at probabilities in general I like to use a tree diagram. The other answers provide good straight forward solutions you can apply ...
bowdens's user avatar
  • 768
43 votes

Is making all Opportunity Attacks have disadvantage game breaking in any way?

The wizard won't like it. The big negative impact this would have, in my view, is that it makes it significantly harder to maintain a defensive front line. If enemies can pretty much run past the ...
Darth Pseudonym's user avatar
41 votes

Would it be fair to use 1d30 (instead of rolling 2d20 and taking the higher die) for advantage rolls?

No, because you're breaking bounded accuracy Rolling a d30 would let you achieve results far beyond what the character can normally achieve. D&D 5e's 2d20 advantage mechanic specifically prevents ...
Quadratic Wizard's user avatar
40 votes

What is the difference between giving advantage on a roll and reducing the DC?

Just give advantage I’ll get to the math in a minute, but the math really should be moot: there is no guidance for altering DCs based on PC actions because the point of the advantage mechanic is to ...
SevenSidedDie's user avatar
40 votes
Accepted

What is the difference between giving advantage on a roll and reducing the DC?

Mechanically, I would say the main difference is that advantage is easier and provides more stable results (As your result chances go from evenly distributed, to a favorably skewed curve). 5e favors ...
Tezra's user avatar
  • 1,453
40 votes
Accepted

Would it be fair to use 1d30 (instead of rolling 2d20 and taking the higher die) for advantage rolls?

It's inherently unbalanced You're using ways of determining success/failure using methods yielding different probabilities. For this reason it's not fair/balanced. That being said, let's do a more ...
fabian's user avatar
  • 4,301
39 votes
Accepted

Can I stop this homebrewed Lucky Coin ability from being exploited?

Abuses of this will center on avoiding disadvantage on rolls that are important to the current situation. In particular, there's no time limit on this, so the player could just use it out of combat ...
user17995's user avatar
  • 5,172
39 votes
Accepted

How does dim light affect passive perception?

PHB, page 175: Passive Checks ... Here's how to determine a character's total for a passive check: 10 + all modifiers that normally apply to the check. If the character has advantage on the check, ...
Purple Monkey's user avatar
39 votes
Accepted

Use of Mage Hand during combat to gain advantage?

When it comes to DM rulings, they are ultimately always correct by the rules as intended: the intention is that, as the DM, you have the final say in these matters. So that one's easy. It's not ...
Erik's user avatar
  • 81.4k

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