The advantage/disadvantage mechanic is a mechanic in 5th edition D&D that replaces most numerical bonuses and penalties with rolling twice and taking the higher or lower value.

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If you use a Clockwork Amulet on an attack where you have advantage or disadvantage, do you not make a roll at all, or does it just give a "10" on one of the two dice you will roll? Relevant ...
1 vote
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### Advantage on multiple attacks [closed]

I play a multiclass Rogue / Ranger and often use my allies to gain advantage to trigger sneak attack. I'm aware that sneak attack only works once per turn; however, I fight with two weapons and have ...
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### As a DM can I set a different skill check DC for each player? [duplicate]

Let's say that the players find some text. Even though it is written in common, it actually is a translation of an ancient Elvish prayer. One of the players is an elf, the other human and the 3rd one ...
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### Recursive combined probability for triggering a bonus attack?

I'm trying to determine the average damage per round for a homebrew fighting style, so that I can compare it to other types of combat choices, and see if thing will remain balanced, when we introduce ...
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### How do I calculate the probability for a critical hit, with an expanded critical range, and advantage/disadvantage?

I know the critical hit probability for normal critical range (natural 20) is: normal: 0.05 advantage: 0.0975 disadvantage: 0.0025 But I don't know how to actually calculate this, and consequently, ...
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### Are Tucker's Kobolds scarier under 5e rules than in previous editions?

We all know and fear Tucker's Kobolds, a bunch of ragtag CR:1/4 things that hit the party only on a lucky roll but use clever tactics that make a bunch of 10 of them far outstrip their weight class. ...
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### Does the penalty to passive Perception for a fast travel pace stack with disadvantage on Perception checks in light obscurity?

According to noticing threats, While traveling at a fast pace, characters take a –5 penalty to their passive Wisdom (Perception) scores to notice hidden threats. And according to vision and light, ...
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### Is allowing a player to choose the result on a d20 once per long rest more powerful than features like luck points or portents?

Obviously, allowing a character to critically hit or miss on demand is hugely impactful, but if it's only once a day is it appreciably overpowered compared to other similar features? Aside from the ...
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### If a character with darkvision stands inside the magical darkness from a Tricksy Fey Spirit, can they attack faraway enemies with advantage?

The Tricksy Fey spirit can create a cube of magical darkness. Summon Fey (TCoE, p. 112): Tricksy. The fey can fill a 5-foot cube within 5 feet of it with magical darkness, which lasts until the end ...
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### When using elven accuracy, do you have to take the results of the reroll?

The Elven Accuracy feat says: "Whenever you have advantage on an attack roll using Dexterity, Intelligence, Wisdom, or Charisma, you can reroll one of the dice once." Assuming you meet the ...
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### Hiding in combat in complete cover [duplicate]

We had a situation: Rogue broke line of sight to enemies by running around the corner in complete cover a round ago. Next round, the enemies move closer, two engage melee fighters and two stop in the ...
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### Can a Tricksy fey from the Summon Fey spell place a cube of darkness partially on an enemy, so allies can still target what’s visible at advantage?

The summon fey spell (TCoE, p. 112) summons a fey spirit marked by a chosen mood, which determines the secondary effect of its Fey Step bonus action (after teleporting 30 feet). For the Tricksy mood, ...
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### Can you Sneak Attack without advantage?

The rules for rogue state that Once per turn, you can deal an extra 1d6 damage to one creature you hit with an attack if you have advantage on the attack roll. You don't need advantage on the attack ...
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My knowledge domain cleric just levelled up and got the Channel Divinity: Read Thoughs ability. Provided I use this ability during combat and the enemy fails their saving throw, would reading their ...
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### Is there a spell or item that makes it so enemies have disadvantage when attacking anyone other than you?

I'm thinking of something similar to the effect of Goading Attack or Compelled Duel, but those can only be used on one target at once and require an action to activate. I was hoping for a higher ...
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### If I am using my familiar's special sense to see and a creature is attacking me that I see with my familiar, would they get advantage?

Similar to the following: Can I act normally while seeing through my familiar's eyes, per the Find Familiar spell? Can a spell caster attack and/or cast spells while using a familiar's senses?...
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### As a rogue, what are the most reliable ways to gain advantage on attacks?

I am making a very specific Ranger/Rogue multiclass that heavily relies on getting sneak attacks. What are some reliable ways to gain advantage on attacks in combat, especially at early levels?
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### Does a rogue attacking from behind a corner as a creature passes by have advantage?

Reading about the use of the Hide action in the PHB, and reading answers (1, 2, 3) on the topic had me wondering: if a rogue hiding behind a corner attacks a creature passing by with a melee weapon, ...
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### Can I prepare my movement to avoid damage by moving around an opponent on their turn?

So, what I'm asking is based on the (potential) ability to move out of the way of an attack, for example by moving through the target's legs. This example does require the target to be at least one ...
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### How to make a Roll20 macro that rolls Advantage and adds a modifier?

I have an Abjuration Wizard with the Improved Abjuration feature which lets me add my proficiency bonus to ability checks made when casting a spell such as counterspell. Additionally, my wizard also ...
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### Is disadvantage resolved before or after the bonus is applied from the Reborn lineage's Knowledge from a Past Life trait?

The Reborn lineage in Van Richten's Guide to Ravenloft includes a racial trait called Knowledge from a Past Life that says, among other things: When you make an ability check that uses a skill, you ...
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### What options exist to remove (not just cancel out) disadvantage on ranged attacks at short range?

Spelljammer is out, and with it, the long awaited rerelease of my favorite hippo-homies, the Giff! The Giff racial abilities give them most of the advantages of the Gunner feat, as well as some great ...
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### Does the plasmoid's Amorphous trait grant advantage on ability checks made to avoid being grappled?

The Plasmoid's Amorphous trait (from Ch. 1 of the Astral Adventurer's Guide in Spelljammer: Adventures in Space) says, in part: [...] You have advantage on ability checks you make to initiate or ...
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### How does a magnifying glass benefit a player?

The Investigator background grants the player a magnifying glass in their starting equipment. The item's details mention starting a fire in broad daylight, and have the following added: A magnifying ...
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### (Class) gets to repeat a check or save against being moved or knocked prone—how to word?

I’m working on a homebrew class that receives benefits for holding one position. These benefits end if they move 5 feet or more, or if they’re knocked prone. Since so much of the class revolves around ...
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On my last session one of my players became invisible with the whole team, but the enemy could, and did, cast see invisibility. Then my player argued that, in resulting combat, they still had ...
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### Is making all Opportunity Attacks have disadvantage game breaking in any way?

To try and promote more movement in my game I'm considering a ruling where all Opportunity Attacks have disadvantage. Are there any ways this would significantly change the game? Party consists of two ...
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1 vote
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### What is the net effect from advantage or disadvantage on to hit chance? [duplicate]

For many character build calculations, it is valuable to know how much to hit chance is added by advantage (or removed by disadvantage). This differs depending on the number required for a hit on the ...
1 vote
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### How do I calculate the probabilities of two consecutive success results in AnyDice?

I know that rolling with disadvantage gives you a negative bonus in between 1 and 2, that's easy to calculate in anydice.com but how can I estimate the increasing in difficulty that adds an extra roll?...
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### Can you use silvery barbs to get advantage on a saving throw?

The description of the spell says 1 reaction, which you take when a creature you can see within 60 feet of yourself succeeds on an attack roll, an ability check, or a saving throw So it sounds like ...
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### Is it mathematically better to roll one attack or two with disadvantage?

Rolling one attack with advantage is worse than rolling two normal attacks (because we have two attack rolls either way, but only one vs two chances of dealing dmaage). However, what of the inverse ...
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### Can multiple summoned creatures Help multiple allies gain Advantage through one verbal command? [duplicate]

If a player's character summons N creatures, say for example 10 Giant Centipedes using Giant Insect, and immediately uses his free action to verbally command them en masse to use their Help Action to &...
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### What is the interaction between "cannot make a roll with advantage" and disadvantage?

Picture the following scenario. A creature attacks me, and through any combination of features, spells, conditions and other effects (for example, I am a Recklessly Attacking barbarian being ...
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### How does Silvery Barbs interact with other "reroll" effects?

This other question discusses how silvery barbs interacts with advantage and disadvantage. But there are some effects that let someone reroll a d20 without using the advantage/disadvantage mechanic, ...
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### How does the silvery barbs spell interact with the enemy having advantage?

How does the Silvery Barbs spell interact with the enemy having advantage? For example, consider the following situation: You cast a spell that requires a saving throw against a single target. Your ...
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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?

In our 5e campaign, I'm playing an 8th-level Rogue (Arcane Trickster) with the Crossbow Expert feat, which (among other things) means I can shoot twice in one turn: once as a bonus action and once as ...
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### How does eldritch blast interact with being hidden?

A level 5 goblin warlock moves behind a large tree and uses their bonus action to Hide. Their Stealth check beats the enemy's passive Perception. The hidden warlock then casts eldritch blast and rolls....
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### Can attacks against an Echo gain advantage for unseen attacker?

Usually, when two creatures can't see each other, and one makes an attack roll against the other, we roll a straight single D20-- advantage from unseen attacker cancels out with disadvantage from ...
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### The Armorer artificer's Infiltrator Armor Model negates disadvantage on Stealth from armor; can you still gain advantage on the check by other means?

The Armorer artificer's Armor Model feature (TCoE, p. 16) lets you customize your Arcane Armor into the Infiltrator or Guardian armor models, each of which grants several benefits. The Infiltrator ...
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### Is it possible to gain the benefits of lying prone without incurring disadvantage on attacks? If so, is this broken?

PHB p. 190 says: You can drop prone without using any of your speed. Standing up takes more effort; doing so costs an amount of movement equal to half your speed... You can't stand up if you don't ...
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### Does Advantage on a target only apply for the first of multiple attacks?

Any time you get Advantage on a target you roll 2 dice and keep the better roll, and do the opposite for Disadvantage. How does this affect attacks if you have multiple attacks such as from fighters/...
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### Can I use Booming Blade and Sneak Attack, and then use Disengage (if the first attack hit) or Two-Weapon Fighting (if it missed) on the same turn?

I am building a rogue-warlock multiclass in D&D 5e. I get advantage using my familiar's Help action. And because it is near me, I can use Sneak Attack as well. I am thinking about using booming ...
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I am looking at creating a few new categories of weapons just to add a bit more reason to spend money on mundane equipment in the early game. Poor, and Masterwork. My initial idea is that poor weapons ...
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### Do you have disadvantage in dim light on attack rolls?

On p183 of the PHB under Vison and light it says: The most fundamental tasks of adventuring— noticing danger, finding hidden Objects, hitting an enemy in Combat, and targeting a spell, to name just a ...
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### If I make a ranged attack at a paralyzed creature within 5 feet of me, do I have advantage on the roll?

If I cast guiding bolt at a paralyzed creature while standing within 5 feet of it (so it counts as a critical hit), do I have advantage on the roll? The rule on "Ranged Attacks in Close Combat&...
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### When is casting Blade Ward better than taking the Dodge action?

I'm considering Blade Ward for a character's cantrip selection. It takes an action to cast, resulting in the following effect: Until the end of your next turn, you have resistance against ...
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### Does a stunned creature roll Initiative with disadvantage?

Part of our group got stunned before Initiative was rolled: Stunned A stunned creature is incapacitated (see the condition), can’t move, and can speak only falteringly. The creature automatically ...
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### Is this Homebrew Advantage rule broken?

I know about this suggestion. Mine is an even further extension of that, and I'm asking about whether there are any further issues and whether I've fixed Lucky. I find the way 5e handles multiple ...
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### Is the Clockwork Soul Sorcerer's Restore Balance feature a visible effect?

If a Clockwork Soul Sorcerer is in a social situation and has disadvantage on a persuasion check, then uses their Restore Balance feature, would anyone be able to see that?
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