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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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1answer
1k views

How does the AC bonus of a Monk's belt work when worn by a non-monk?

The monk class states: AC Bonus (Ex): A monk is highly trained at dodging blows, and she has a sixth sense that lets her avoid even unanticipated attacks. When unarmored and unencumbered, the monk ...
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1answer
367 views

Do you lose DEX AC bonus while standing in Grease

Do you lose your DEX bonus to AC while standing in the area of effect of a Grease spell?
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2answers
123 views

Does the Invisible Blade's Unfettered Defense feature work if you're under the effect of the Mage Armor spell?

The Invisible Blade's Unfettered Defense feature (CW 46) says: An invisible blade benefits from an increased survival instinct during combat. Because of this sixth sense, he adds 1 point of ...
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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 ...
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2answers
18k views

When using a breath weapon do I roll against armor class?

In the 5e D&D player's handbook, the Dragonborn's Breath Weapon says: The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d6 damage on ...
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3answers
4k 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 ...
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2answers
1k 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 ...
4
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1answer
133 views

Where do I find a monster's AC bonus from high dexterity?

There are a couple of ways for a creature to lose its dexterity bonus to armor class. I am used to 3rd/4th/5th monster manuals, where dexterity values are given, but in AD&D 2e I can't find those ...
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1answer
572 views

In Wild Shape for druid5/barbarian1, how does unarmored defense work? [duplicate]

Background: My Hill-dwarf character started out as a barbarian. When his clan battled the undead hordes, he barely escaped with his life. He was taken in by a druid, and discovered a higher calling. ...
4
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1answer
381 views

Do unfettered defense and canny defense stack?

I would like your opinion on basically what I've asked in the title. The rules presented are as follows: Duelist: Canny Defense (DMG 185): When not wearing armor or using a shield, a duelist adds ...
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1answer
340 views

How does the AC of ships in Ghosts of Saltmarsh interact with the optional vehicle proficiency rules from Xanathar's?

In Xanathar's Guide to Everything, there is an ability under "Land and Water Vehicles" (p. 82) called Vehicle Handling which allows you to add your proficiency bonus to the AC of a land/water vehicle ...
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1answer
3k views

What is the maximum AC possible without using magic items?

What is the maximum AC a PC can acquire without the use of magic items? Allowed content are feats, spells, and temporary effects - but not effects from allies, magical items, or UA content.
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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 ...
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1answer
2k views

Does the enhancement bonus on armor apply to armor class?

If I have a chain shirt with spell resistance 19 (+5 bonus), does that +5 apply to armor class along with the +4 from the chain shirt?
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3answers
24k 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 ...
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2answers
3k views

Plate armor question

I was playing around with the Character Builder and noticed an oddity with my level 7 half-orc Knight: My character with no armor has a net AC of 16 [10 +3 (half level) +2 (heavy shield) +1 (dex)]. I ...
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1answer
177 views

Lycanthrope AC & Magical Armor

Just a quick question here. One of my players was bit by a Lycanthrope and is currently cursed. Thing is that he plans on staying that since alignment won't alter anything for him. According to the ...
3
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1answer
301 views

The Beast Master ranger adds their proficiency bonus to their animal companion's AC; is the result its new base AC?

As per the Ranger Companion feature, you can add your proficiency bonus to your companion's AC. I would like to know how to interpret this in terms of AC calculation. Could I interpret as though my ...
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1answer
361 views

What type of bonus is a Monk's bonus to AC?

What type of bonus is a Monk's AC bonus in Pathfinder, Natural, Deflect, Or some other type? All I know is that it's a Wisdom bonus.
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1answer
387 views

Can a Helmet Provide an AC Bonus to a Beheaded Familiar?

Background I recently gained a Beheaded Familiar with the Improved Familiar feat. Since it has a slam attack, and is tiny, it would provoke attacks of opportunity to attack with said slam attack. ...
3
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1answer
670 views

What AC do Bracers of Defence count as for the Weapon Type vs. Armor Type rules?

How do Bracers of Defence affect Base AC in regards to Weapon type vs. Armor type? I play in a campaign that is centered around the Player’s Option series (which might be considered 2.5th edition) ...
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1answer
960 views

How can I improve my Touch AC outside of increasing my Dex Mod?

I'm currently playing a LVl5 Caster Druid in a PVP arena, where the other players are quite fond of blaster type characters, and I tend not to last more then 2 or 3 rounds. While I'd like any ...
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1answer
162 views

How does surprise affect AC?

Under wrestling rules, the Grindhouse rulebook tells that everyone involved in wrestling is attacked as though they were surprised. Under Encounters, in the surprise section, there is info on how to ...
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1answer
284 views

How does the Swashbuckler's Suave Defense feature work with the Robe of the Archmagi? [closed]

If I were to give Suave Defense trait to a player and if they have the Robe of the Archmagi, how would it work? Suave Defense states: While the swashbuckler is wearing light or no armor and ...
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2answers
1k views

Does the dex bonus to AC from armor and shield stack?

I have a dwarf with full plate armor and a tower shield with dex of 16 (+3). Full plate grants a max dex bonus of +1 to AC and the tower shield +2. Now, can I get both the +1 AND +2 to get a +3 dex ...
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2answers
848 views

How does the abstraction of AC make sense when flat-footed?

I am looking for a rule-wise explanation of the logic as to why your deflection bonus (e.g. a shield) is counted in your flat-footed AC. From what I understand, being flat-footed means you didn't see ...
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1answer
83 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?
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2answers
3k views

Are there items that can be worn under/in addition to armor that grant AC bonuses?

Pretty self-explanatory; I began wondering this when I misread the description of Mithral Shirt and thought it could be worn on the body slot in addition to existing armor to grant additional AC ...
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1answer
72 views

How does the AC value of helmets in Player's Option: Combat & Tactics work?

Page 128 of Player's Option: Combat & Tactics (book number 2149) gives an overview of the Armor Class of various types of armor and pieces of armor so you can assemble your own suit of armor. ...
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1answer
733 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 ...
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0answers
907 views

How does Dragon Hide interact with monk AC? [duplicate]

Before I begin let me preface this with the following: I understand that mechanically speaking the barbarian and Monk armor classes are calculated 10 + Dex mod + Wis/Con depending on the class played. ...
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1answer
664 views

Does a (homebrewed) Tortle's Natural AC stack with worn armor?

The tortle race on dandwiki has a feature called Shell which states that it has 14 + your constitution modifier natural AC. It doesn't stack with unarmored defense but if I were, for example, wearing ...
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2answers
13k views

How 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 ...
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1answer
2k views

Do AC bonuses from spells stack with AC from equipment?

For classes like the Bloodrager that can wear armor and shields and cast arcane spells: Does the armor bonus to AC from the Mage Armor spell stack with the armor bonus to AC from an actual armor worn ...
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1answer
408 views

Some creatures have unbelievably high ACs in the 40s, but how is that even possible to hit? [closed]

I'm looking at creatures in the d20 SRD and seeing monsters that have really high AC, like 45. Is that the correct AC or is it supposed to be something else? And if it is correct, then how is anyone ...
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2answers
446 views

My Paladin's AC seems way too good. Did I do something wrong?

It's been a couple of decades since my pal and I played first edition AD&D. We recently rolled characters for a new game, but I'm not entirely certain I did my human Paladin's armour class right; ...
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1answer
276 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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1answer
36k views

Do you get a proficiency bonus to AC?

Do you get a proficiency bonus to AC when wearing armor you are proficient with?
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1answer
81 views

Does an enemy lose its Dex bonus to AC if it has a miss chance against me?

If I am invisible, the enemy loses its Dex bonus against me, and has a 50% miss chance. If I use Displacement, it also has 50% miss chance against me. Does it also lose its Dex bonus against my ...
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1answer
111 views

What other actions is Total Defense referring to when it says it can't be combined with other actions that increase your AC?

Total Defense states: You can defend yourself as a standard action. Starting at the beginning of this action, you get a +4 bonus to your Armor Class until the start of your next turn. You can’t ...
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2answers
3k 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 ...
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1answer
675 views

Do clerics lose the shield bonus while casting a spell when they provoke an AOO?

Im building a cleric and I am confused about clerics and shields. I did have another question but found it answered here. My remaining question is when a cleric casts a spell while holding a light ...
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1answer
1k views

AC Bonus Class Feature [closed]

Other than Monk, Swashbuckler, and Brawler, what are some classes that give you an AC bonus from having the class?
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1answer
144 views

Do the AC penalties from a lunge attack and the Samurai's Challenge stack?

If I use the Samurai's Challenge ability against an opponent (−2 AC except for attacks from my target), and use lunge to attack them (−2 AC until my next turn), do these two penalties ...
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0answers
342 views

Mage Armor + Unarmored Defense? [duplicate]

Playing a barbarian, and thought the Magic Initiate feat would be a good way to grab some range cantrips and a single-use utility spell. Originally thought of going with warlock, but DM suggested I go ...
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1answer
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In D&D 5e is it possible to add a breastplate to leather armor for an AC bonus? [duplicate]

I just started playing D&D, and I'd like to know if it is possible to add a breastplate to leather armor for an AC bonus?
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1answer
5k views

Is Dexterity proficiency modifier added to AC? [closed]

I'm playing as a bard that has a proficiency bonus that's added to Dexterity. When calculating the character's Armor Class, do I add only the base Dexterity modifier or do I add the base Dexterity ...
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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 ...
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1answer
728 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 ...
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1answer
1k views

How does the AC bonus from things like Ring or Cloak of Protection work with Touch AC?

How does the AC bonus from things like Ring or Cloak of Protection work with Touch AC? I know that when something targets Touch AC you don't add the AC bonus from Armor or Natural Armor but retain ...