Questions tagged [armor-class]

For questions about Armor Class (AC), the mechanical abstraction of how difficult it is to hit and cause damage to an opponent in D&D and related RPGs.

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4
votes
1answer
150 views

Can you wield the Staff of Defense and a shield, and have their AC bonuses stack with the Mage Armor spell?

The staff of defense from the Lost Mine of Phandelver Starter Set campaign (p. 53) is a magic staff that grants +1 to AC when attuned. As a magic staff, it also functions as a quarterstaff, which has ...
29
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4answers
40k views

Does natural armor stack with unarmored defense?

In D&D 5E, does natural armor stack with Unarmored Defense? We have a level 2 player character who wild shaped into an animal. The player said they could stack its natural armor with Unarmored ...
7
votes
1answer
2k views

Does a monster's AC change when it doesn't use its shield?

Every monster has a specific AC in its stat block. The rules don't explicitly say anything like "subtract 2 from AC if the creature doesn't use a shield", do they? Does that mean a monster always has ...
10
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2answers
3k views

Can a warforged druid use composite plating?

A druid gains medium armor proficiency, but is not allowed to use metal armor. A warforged with medium armor proficiency can normally set their Integrated Protection to Composite Plating, granting an ...
1
vote
1answer
335 views

Do Storm Giants have a Natural Armour value?

A Storm Giant's AC is 16 due it its scale mail, and it has a Dex modifier of +2, so without the scale armour the giant's AC would be 12. However, a Cloud Giant has a Natural Armour of 14 and a Dex ...
5
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1answer
201 views

Does armor class protect against damage from falling objects?

Does armor class protect against damage from falling objects? Let’s say we have average Munchkin McGee. Now, he boosts his AC to Celestia and back, then his damage reduction to the Abyss and back. I ...
6
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2answers
458 views

What is the highest possible unarmored AC?

What is the highest possible AC a character can get by themselves with no armor or a shield? Constraints: Must be obtainable with a single character, by themselves, with no help from any other ...
12
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5answers
40k views

How does barkskin work?

Now the wording in the spell description is extremely vague and ambiguous making the spell effect up for interpretation. It just says: ... the target's AC can't be less than 16, regardless of what ...
50
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12answers
250k views

What is the highest possible AC?

Assuming you are level 20, and have access to any magic item, how high can you get AC (permanently or for a set duration)? Constraints: Magic items are those on the tables in the D&D 5th ...
2
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3answers
282 views

AC calculation with a Defense Fighter + Shield + Defensive duelist

I try to create a lvl 4 character with a lot of AC. I'm not sure if it's ''legal'' So here it is: Studded leather armor : 12 AC Dex mod : +3 Shield + 2 AC Fighter Defensive style : +1 Ac Feat ...
0
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0answers
75 views

Possibility of DND 5e AC buld-up [duplicate]

I read in the DND 5e player's handbook about AC and I'm confused if my build is ok or not. I'm trying to create lvl 4 character with a lot of AC with a light armor. So here it is: A Tabaxi, Fighter ...
5
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1answer
140 views

Do Tiny animals get an AC bonus?

In Pathfinder 2e, do tiny animals get a circumstance bonus to AC? Would a Tiny familiar get that same bonus?
7
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2answers
513 views

Is there an official source for the properties of stone?

The issue comes up mainly in relation to the spell wall of stone, which states that: A nonmagical wall of solid stone springs into existence at a point you choose within range. [...] The wall is ...
4
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2answers
179 views

What is the AC of a Human with 16 dex combined with the spell Armor?

The Spell Armor (Unearthed Arcana p.51-52) states: The caster creates ,a magical field of force which serves as if it were leather armor (AC 8). If the spell is cast upon a person already ...
-9
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2answers
41k views

What is Armor Class used for?

I have never understood or found any answer to how to use your AC. Is it something the GM have to keep in mind all the time to reduce or add damage to specific players based on how high their AC is, ...
15
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2answers
2k views

How does AC scale with character level?

In D&D 3.5, I know that base attack bonus scales with level. How does AC increase over levels to meet it? I know saves do, so there should be some kind of AC thing? Is it done more with HP, or is ...
20
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4answers
4k views

What is the highest possible temporary AC at level 1, without any help from others?

Assuming you are level 1 and have access to any item that you can afford at character creation rolling the maximum amount of starting gold, and all spells that are available to you due to character ...
10
votes
4answers
4k views

What is the highest possible permanent AC at character creation?

Assuming you are level 1 and have access to any item that you can afford at character creation rolling the maximum amount of starting gold, how high can your permanent AC become (permanently, not for ...
9
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6answers
3k views

What methods exist to get your AC higher than 20 without magic items?

I was poking around answering for this question about the highest AC possible for a sorcerer and noticed something odd. It doesn't seem to be possible except in the case of the Barbarian to naturally ...
15
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2answers
1k views

What is the AC of a Warforged Druid when Wild Shaped?

When a Warforged Druid uses Wild Shape, how is its Armor Class determined? Will the AC be based on the Warforged's Integrated Protection trait (E:RftLW, p. 36; WGtE, p. 70), or the animal's natural ...
9
votes
3answers
535 views

For the Battle Master fighter's Know Your Enemy feature, what happens if the target's AC changes while the target is being observed?

Know Your Enemy (PHB, p. 73-74) is a Battle Master fighter feature that lets you determine whether a creature's Armor Class is superior, equal to, or inferior to yours. What happens if a character's ...
4
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1answer
64 views

Dervish of Dawn (Fighter) reducing higher charge AC penalties

Burst of Speed (Ex) At 3rd level, a dervish takes only a –1 penalty to her AC after charging. At 7th level, the dervish can charge with no penalty. This ability replaces Armor Training 1. - ...
11
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3answers
3k views

What are the ramifications of changing Armor Class to be Constitution-based instead of Dexterity-based?

It's never made much sense to me that your Armor Class is based on your Dexterity modifier, which carries the implication that you're harder to hit because you're somehow nimbly moving out of the way ...
2
votes
1answer
108 views

Anydice formula to calculate hit percentage against AC 5-25

I'm trying to create what I think is a simple formula in Anydice and struggling to figure it out. I roll a 20-sided dice, add a number x, and want to know the odds that the number will be greater or ...
20
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3answers
22k views

Combining various AC-providing clothing and armor

Are there any rules for combining different clothing/armor for providing AC? For example, can an adventurer wear full plate and bracers and get the AC bonus from both? Can an adventurer wear a Cloak ...
10
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3answers
26k views

Are there other modifiers to AC?

My knowledge of D&D is primarily 3.5. In that edition, there were many modifiers that affect AC, Natural Armor, Deflection Modifier, Dodge Bonus, Insight Bonus, Luck Bonus, and Sacred Bonus. I ...
6
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4answers
500 views

What's my most efficient use of spell slots to help my AC?

I've got a wizard with 11 Dex and I'm trying to figure out what my most efficient use of spell slots is to help me from getting hit. We typically have 2-4 very difficult encounters per day and I ...
10
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5answers
24k views

Does Mage Armor have any advantages over magic Studded Leather +X?

Does Mage Armor have any advantages over Studded Leather +1 or even Studded Leather +2?
24
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3answers
4k views

Can you benefit from the Defense fighting style while not using armor AC calculation?

Let's assume a Lizardfolk fighter, with the Defense fighting style, wearing leather armor. Lizardfolk, per Volo's p. 113, get Natural Armor: You have tough, scaly skin. When you aren't wearing ...
5
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1answer
158 views

How does a monster's AC from AD&D/2e relate to AC in D&D 5th Edition?

I want to adapt several creatures from AD&D/2e so I can use them in 5e. Is there an easy way to translate Armour Class from AD&D/2e to AC in 5e? I'm looking for a formula if possible. ...
13
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1answer
2k views

Is there any way to add your Charisma score to your Armor Class?

Bladesinging wizards add their Intelligence modifier to their AC while singing. Barbarians get an unarmored AC of 10+Dex+Con Monks get an unarmored AC of 10+Dex+Wis What are the ways, if any, in ...
1
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2answers
3k views

How does Wild Shape work with special ways to calculate your AC?

Among the effects of Wild Shapes, these two: Your game Statistics are replaced by the Statistics of the beast, but you retain your alignment, personality, and Intelligence, Wisdom, and Charisma ...
0
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3answers
152 views

What feats or another options can help to avoid touch attack?

If character have only 10 DEX, he becomes vulnerable for touch attacks, because this kind of attacks don't count the armor. What feat i can take, or what i must do to avoid this attacks, or at least ...
6
votes
1answer
23k views

Does an attack hit if it exactly matches the target's AC?

For an attack to successfully hit a given Armor Class, would it need to get a number higher than the Armor Class or does it hit with the exact number as well?
9
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1answer
1k views

Can you wield a a typical shield and Aegis of the Raven Queen at the same time?

I know that you can only hold one shield at a time but the description of the Aegis of the Raven says that its plus magic bonus to AC stacks up with the current pluses from a shield that is currently ...
14
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2answers
3k views

How do I calculate my AC for this character?

I play a Tortle Draconic bloodline sorcerer and my DM and myself are scratching our heads on what it's AC total should be. Draconic Bloodline gets 13 + dex, but Tortles get 17 flat with no dex mod. I ...
6
votes
2answers
3k views

What options exist to improve a low level Sorcerer's armor class?

I'm creating a character for a new D&D 5e campaign soon. We'll be starting at level 3 to reduce PC mortality, and I don't expect the campaign to run long enough for more than a couple level ...
12
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3answers
15k views

Will adding helmets unbalance the game?

I can't find any mention of a helmet in the Player Handbook in the armour table, and the only helmets I can find are magic items like The Helm of Telepathy. Would it be unbalanced to allow helmets to ...
13
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4answers
2k views

Is gaining 1 AC in exchange for disadvantage on Perception checks a balanced trade?

Inspired by this answer, and to avoid lengthy back and forth comments, I decided to make this a question in itself. You can put on your helmet for +1 AC and disadvantage on Perception checks. In ...
7
votes
1answer
4k views

When restrained or unconscious, do you lose your Dexterity bonus to AC?

If a character is restrained or unconscious/sleeping, do they lose any bonus from dexterity for armor class and dexterity saves?
4
votes
2answers
1k views

Mage Armor with Defense fighting style (for Adventurers League bladesinger)

The Defense fighting style says: While you are wearing armor, you gain a +1 bonus to AC. Can use still use this if your mage armor AC is overriding your armor's AC because you are still wearing ...
4
votes
1answer
320 views

What are the ability modifiers (other than Dex) that can be used when calculating AC?

As far as my knowledge of D&D goes there are 2 ways to determine AC: Calculation of AC through Base + Stat modifiers Examples of these AC calculations are: Unarmored = 10 + Dex mod Unarmored ...
3
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2answers
41k views

Do you get a proficiency bonus to AC?

Do you get a proficiency bonus to AC when wearing armor you are proficient with?
0
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2answers
17k views

How do you calculate a warforged barbarian's AC?

I am looking at the warforged AC calculation from the Integrated Protection feature, looking only at Darkwood Core (unarmored), for a possible warforged barbarian. (I am using the version of the ...
37
votes
7answers
11k views

Mathematically, is a +2 bonus to AC better than attackers having disadvantage?

Mathematically speaking, I'm trying to determine if Bracers of Defense (AC+2) is better than a Cloak of Displacement, which causes all attackers to have disadvantage on attack rolls against you. If ...
5
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3answers
17k views

Average AC of monsters per CR?

In D&D 4e, you could tell most monster's AC just from its level and role (Brute, Skirmisher, Soldier). This is not the case in 5e, but an estimation would be very useful when you try to compare ...
23
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2answers
38k views

In what situations would a target be denied a Dex bonus to AC?

I have an encounter coming up where my PCs will face a high level rogue. Naturally, I'd like to use his sneak attack ability, but I've never played a rogue before so I'm light on experience. From the ...
3
votes
1answer
280 views

Where can I find my Animal Companion's AC?

For familiars, it is quite easy to find that they have your AC. How can I find the AC of my Animal Companion?
13
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3answers
3k views

Can a character dodge an attack that beats their Armor Class?

I am DMing a campaign. The party was fighting two castle guards, and killed one of them. The other guard attacked them, got past the AC of one of my players. He said he could dodge, but I don't know ...
-4
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5answers
459 views

Is there anything that prevents this “Negative AC armor” creation process to function?

This is a follow-up to a portion of this answer to a previous question of mine pertaining to the lowest possible achievable AC. The question is also slightly different as it pertains to magical armor ...