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
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0answers
112 views

How to convert armour class from Pathfinder 1 to D&D 5?

My sandbox game uses some material from Pathfinder (and D&D 3 and 3.5). I run games there using D&D 5 (among other rules systems). How do I convert the armour class of a creature (especially ...
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Highest AC in 5e [duplicate]

In dnd 5e the highest possible AC that I know of that you can get would be 22, in a Barbarian build with 24 in constitution and 20 to in dexterity using Unarmored defense. Is there any way to get a ...
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1answer
112 views

Which hybrid classes give alternative ways to calculate AC?

In D&D 4e some hybrid classes provide alternative ways to calculate AC. I know about Hybrid Runepriests (Serene Blade) using Wisdom. What other class-ability combinations are there?
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3answers
82 views

What is the AC of a Wall of Bone?

The spell Wall of Bone details a number of statistics about the sections of wall created, including HP, but the description says nothing about AC. It is based on Wall of Stone but that spell does not ...
3
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1answer
154 views

Enhancement bonuses to armour and natural armour stacking

The Ironskin spell states as follows (emphasis mine): You gain a +4 enhancement bonus to your existing natural armor bonus (if you do not have a natural armor bonus, you are considered to have an ...
4
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1answer
158 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 ...
5
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1answer
207 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
490 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 ...
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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 ...
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3answers
299 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 ...
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1answer
157 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?
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2answers
519 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 ...
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2answers
180 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 armored, it ...
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3answers
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 ...
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 ...
4
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1answer
69 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. - ...
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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
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1answer
123 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 ...
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4answers
508 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 want ...
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1answer
170 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. ...
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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 ...
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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 ...
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2answers
4k 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 ...
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4answers
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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 ...
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3answers
153 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 ...
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1answer
363 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 ...
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1answer
311 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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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 ...
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1answer
830 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
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 ...
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1answer
283 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 ...
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5answers
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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 ...
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1answer
100 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
868 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?...
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2answers
4k views

Do Dragonborns get unarmored defense?

Now, I might just be stupid or not have seen it but, I’ve been looking and saw that draconic bloodline sorcerers get unarmored defense for “draconic bloodline”. But, do Dragonborns get this for being ...
3
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1answer
785 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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2answers
737 views

Does the Defensive Duelist feat stack with the AC calculation from the Warforged's Integrated Protection trait?

The warforged integrated protection uses your proficiency bonus as part of the calculation for your AC at all 3 levels if you are proficient in that armor type. The Defensive Duelist feat allows you ...
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3answers
4k 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, “...
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2answers
151 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
429 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
934 views

Do AC-increasing items impair a monk's Unarmored Defense as if they were armor?

It's my first campaign, and I'm playing as a monk. My party recently discovered a ring of protection that increases AC by 1, and my party members want to give it to me. I didn't know whether wearing ...
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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 ...
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4answers
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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 ...
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1answer
575 views

How is the Cost of armour affected by the armour's attributes such as AC and type?

The 'Armor and Shields' section of the Player's Handbook lists the AC and Cost of armour and shields. The top end of each armour type (Light, Medium, Heavy) is substantially more expensive than the ...
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2answers
4k views

If you attack a Tarrasque while swallowed, what AC do you need to beat to hit it?

If you get swallowed by a Tarrasque, your only way of getting out is to deal it enough damage to force it to regurgitate you (60 damage or more on a single turn). There's no mention of the AC when ...
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1answer
353 views

Is there any way I can increase my griffon's AC?

I’m a level 3 Sorcerer and I have a griffon figurine that allows me to summon a griffon. My DM allows me to use it once a day (lasting 6 hours) and it has a base AC of 12. I can increase it to 13+Dex ...
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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 ...
5
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1answer
70 views

Is the Wall of Blades maneuver affected by AC penalties?

Do AC penalties (and bonuses, for that matter) apply to the Wall of Blades manuever? Bob the martial adept has prepared Wall of Blades this morning. He also acquired Shocktrooper last week. Bob's ...
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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?
20
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1answer
761 views

Which Armor Class values should be used as controls when making damage calculations?

It is known that occasionally questions will pop up that are about attempts to optimize a character's damage output (sometimes shorthanded as DPR, or Damage-per-Round), and veterans of this game know ...