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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19
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3answers
20k 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 ...
26
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4answers
47k views

How does Mage Armor interact with Unarmored Defense?

If a character with the Unarmoured Defence class feature casts Mage Armour, what is their AC? Do they choose which 'base' AC they take, or do they stack somehow? Is there rules text that explains ...
44
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11answers
187k 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 ...
13
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1answer
4k views

Does an Enhancement bonus on clothing become an Armor bonus?

Given this discussion I had here about combining Magic Vestment and Coat of Many Stars: Targeting what you're wearing would get you two different, non-stacking sources of Armor bonus. – Zachiel ...
13
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3answers
21k views

Can a Beast Master ranger armor their animal companion with barding?

I was reading about the Barding rule on page 155 of the PHB, and I was just curious if a Beastmaster Ranger could armor up their companion? If so, how would that stack with the Ranger's proficiency ...
12
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5answers
33k 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 ...
23
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2answers
35k 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 ...
29
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8answers
33k views

How does a DM deal with a PC with an abnormally high Armor Class?

One of the Fighters in my party has an AC of 21 at level 5. He wears chainmail which gives an AC of 16, has the Defense Fighting Style which gives a +1 to AC when wearing armor, and a +2 shield (found ...
28
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6answers
7k views

Can someone decide to be hit?

In this question, I asked about whether a character could willingly not use their shield or Dex bonus on certain attacks due to wanting to be hit. This raises the greater question- Can someone decide ...
15
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1answer
8k views

Does Mage Armor stack with the Shield spell?

Mage Armor sets the target's base AC to 13+Dex. The Shield spell gives you a +5 bonus to AC. If you cast both on yourself, does that give you an effective AC of 18+Dex while both spells are in effect?
26
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8answers
32k views

What is the highest AC possible for a sorcerer?

What is the highest Armor Class achievable for a Sorcerer with the Sorcerous Origin of Draconic Bloodline? Player's Handbook Chapter 6 variant rules included. (Multiclassing, Feats, etc.)
12
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3answers
5k views

Does an unconscious creature still use its dexterity to avoid attacks?

Related - How does one dispatch a helpless opponent? Here's the unconscious condition description: Unconscious An unconscious creature is Incapacitated, can't move or speak, and is unaware of ...
14
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3answers
9k views

Is there Touch AC and/or Flatfooted AC in 5th Edition D&D?

Does D&D 5E have a mechanic similar to Touch AC or Flatfooted AC as it exists in D&D 3.5? To put it simply, in D&D 3.5, touch AC excludes armor bonuses when armor can't help against an ...
11
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3answers
11k 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 ...
10
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3answers
11k views

Can Monks gain the benefit of the Dual Wielder Feat with their Unarmed Strikes?

Simply put - can the Monk class use the Dual Wielder Feat with: A (monk) weapon and an unarmed strike? An unarmed strike "in each hand"? Admittedly this is a similar question to this post about ...
7
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1answer
2k views

Can a monk “wear” Mage Armor without losing their wisdom bonus to AC?

Can a monk use mage armor without losing their wisdom bonus to AC (in 3.5e)? More generally, can a divine caster wearing a monk's belt use greater luminous armor without losing their wisdom bonus to ...
5
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1answer
3k views

Do any of these sources of AC bonuses conflict or negate each other?

My understanding, confirmed by the answer to this question: When a War Caster Wizard carrying a shield casts the spell "Shield" does the AC bonus Stack? is that anywhere an actual +N bonus ...
2
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1answer
729 views

Is Magic Armor with an Enhancement Bonus over 4 Automatically Masterwork Armor?

Motivation After seeing this comment, I read this answer and this answer. This gave me the distinct impression that any magic armor with an enhancement bonus of +4 or more is automatically ...
24
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3answers
302k views

What exactly is “base AC”?

The phrase "base AC" appears in the D&D 5E basic rules exactly once, in the description of the Mage Armor spell. This says: The target’s base AC becomes 13 + its Dexterity modifier. But if ...
27
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3answers
3k views

What rules or guidelines are there about when to allow a party to acquire plate mail?

I have heard it said that 5e does not balance its encounters with respect to magic items; in other words it does not consider possession of magic items when defining appropriately challenging ...
15
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4answers
3k 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 ...
18
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10answers
4k views

Does rolling AC to oppose an Attack Roll impact game balance?

I really like the concept of rolling d20 against each other during ability checks like grappling, etc. I want the same thing for normal attacks, so the defender would also roll a d20 + (AC-10). Would ...
7
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4answers
3k 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 ...
13
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2answers
3k views

How does __(Dexterity) vs. AC work?

I'm working through the new Red Box, and have ended up with a character with the at-will Bump And Run power. The attack is listed as __ (Dexterity) vs. AC Is ...
11
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3answers
45k views

How does the AC evolve with high levels?

I am currently DMing a group with an average level of 10. This is my first experience as DM so I have never mastered high levels. Current ACs are reasonably high at the moment (22 for the Paladin with ...
20
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3answers
1k views

What is the lowest possible AC?

This is a direct, somewhat silly, opposite question to What is the highest possible AC? . I’m wondering what is the lowest possible Armor Class a Player Character can get at any point in time, “...
16
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2answers
2k views

How much attack damage does the AC boost from a shield prevent on average?

Statistically, how much attack damage does the AC boost from a shield prevent on average? I've seen claims it results in a 10% reduction in damage taken, is that accurate?
12
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2answers
42k views

Does Size Affect AC?

I have been playing 3.5 for 6 years now and am trying out 5e. Does size affect AC in 5e? In 3.5 a tiny creature would get a bonus to their AC for being smaller, while a huge creature would get a ...
8
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6answers
2k views

Do the AC Bonus (Ex) class abilities of monks and swordsages stack?

Monk and Swordsage both get the class feature AC Bonus (Ex). Monk: When unarmored and unencumbered, the monk adds her Wisdom bonus (if any) to her AC. In addition, a monk gains a +1 bonus to AC ...
5
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2answers
19k views

Charisma Mod to AC?

Is there a way to get your Charisma Modifier to AC other than different revelations* for oracles? I've been looking through the content on the PFSRD and can't find one. I'm hoping there might be ...
4
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3answers
3k views

Armored Wisdom to AC

Is there any combination of races, classes, items, or feats that allows you to add your Wisdom bonus to AC, without restricting the armor that you wear? Several classes offer Wisdom to AC while ...
16
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1answer
2k views

Do tortles get a bonus to AC from a shield while using Shell Defense?

Shell Defense. You can withdraw into your shell as an action. Until you emerge, you gain a +4 bonus to AC, and you have advantage on Strength and Constitution saving throws. While in your shell, you ...
15
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6answers
2k views

Consequences of having half damage on attacks that tie AC as house rule?

Typically if an attack roll equals the AC of a target then the attack does normal damage. I quite like the idea of making it a glancing blow, dealing half damage instead, this would help clue the PCs ...
12
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2answers
5k views

Is the UA Warforged considered to naturally be wearing armor?

I know Warforged are Unearthed Arcana races, and considered in play testing and/or incomplete, but based off of the information available to Warforged, would you consider a Warforged to be wearing ...
12
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2answers
2k views

Is it possible to increase the AC of a mirror image duplicate?

Pretty straight forward question. By RAW, is it possible to increase the AC of the duplicates created by mirror image or they will always have an AC equal to 10 + Dex modifier? Be it using other ...
12
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1answer
507 views

Does Medium Armor's Max dex also put a cap on the negative side?

I know heavy armor ignores Dexterity modifiers for AC calculations, but what about medium armor for a character with a -3 to their dexterity? Does Medium armor bottom out at -2, or will -3 still apply?...
11
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3answers
9k views

What is the AC of an inanimate object?

In D&D 5e, what is the AC of an inanimate object, in case someone wants to attack it? Does it depend on its size? Is it different depending on whether you are making a ranged or melee attack?
8
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1answer
606 views

Is the AC of a Mirror Image Duplicate fixed at Point of Casting?

The spell Mirror Image states the following: A duplicate's AC equals 10 + your Dexterity modifier. However - if you were to cast Mirror Image, and then change your DEX (e.g. by equipping/...
8
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5answers
5k views

Staff of Defense total AC and Shield Stacking

My party is about to confront Glasstaff and potentially obtain the Staff of Defense. This slender, hollow staff is made of glass yet is as strong as oak. It weighs 3 pounds. You must be attuned to ...
7
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2answers
5k views

Would the AC from a Sorcerer's Draconic Resistance combine with a Monk's Unarmoured Defence?

Reading from the Player's Handbook. If you pick a Sorcerer with the Draconic Bloodline you get a base AC of 13 (as long as you wear no armour, page 102). If you multi-class that with a Monk you get ...
5
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2answers
2k views

How is final AC calculated when you have a Natural AC and an Armored AC?

I'm making a vampire player character, with a little bit of homebrew to give it some of the 5e vampire traits without being broken, and one of the traits that I'm carrying over is natural armor of 16. ...
4
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1answer
3k views

Pathfinder's Armor Class to Damage Reduction variant in 5e

I've been DMing Dungeons and Dragons for more than 20 years, and have always had "issues" with the AC system. I was pretty happy when I found the AC as Damage Reduction Variant in the PF Combat ...
3
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3answers
23k views

What is the function of AC?

I just purchased the D&D edition 5 starter set, and the instruction manual/Rule book doesn't go in depth about the effect of AC and how armor effects total AC. So how does AC affect the enemies ...
3
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3answers
6k views

Can the AC bonuses of Bracers of Defense and Black Dragon Mask (HotDQ) stack?

I currently I am playing as a Draconic Sorcerer in our campaign. The group found the following items and I am the only one that can use them for their AC bonus abilities: Bracers of Defense (DMG page ...
1
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1answer
275 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 ...
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2answers
2k views

Special AC and Wild Shapes

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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1answer
707 views

What defines an armor?

There are some spells and perks that require not having armor on to work, so how is armor defined? Is it just any equippable gear that has additional AC? Is it anything more durable than regular ...
0
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1answer
1k views

Would the shield spell stack with shield enhancement when it replaces the shield bonus?

When you use a shield and it has an enhancement value, both of these are added to your AC. Normally when you use the shield spell, it tends to have a better bonus than the shield you are using so it ...
-2
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1answer
2k views

Does Jack of all trades affect AC?

I have seen many questions on the web related to Jack of All Trades, revealing facts new to me such as that it adds to initiative, on account of being an ability check which Jack of All Trades indeed ...