Ability check: Difference between revisions

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{{NoExcerpt|''For a comprehensive summary of the mechanics behind all rolls and modifiers, see [[Die Rolls]].''}}
'''Ability checks''' are [[Dice rolls|dice rolls]] that determine whether a creature succeeds or fails at a task. When attempting an ability check, a creature rolls a d20, and then adds the relevant [[Ability score#Ability score modifiers|ability score modifier]] and, if applicable, [[Proficiency bonus|proficiency bonus]] to the results of the roll. If the final results equal or exceeds a target [[Difficulty Class]] (DC), specific to that task, it is considered as success.
The game rolls an '''Ability Check''' to determine whether a creature will succeed or fail in various scenarios. The creature rolls a D20, and adds its [[#Ability Score Modifier|Ability Score Modifier]] and possibly a [[#Proficiency Bonus|Proficiency Bonus]]. To succeed, the result must reach or exceed a Difficulty Class, which depends on what the creature is trying to accomplish.


<div style="text-align: center;">'''Result = {{InfoBlob|{{D20}} + Ability Score Modifier + (optional) Proficiency Bonus}}'''</div>
<div style="text-align: center;"> Calculation: {{InfoBlob|{{D20}} + Ability Score Modifier + (when applicable) proficiency Bonus}}</div>
 
Ability Checks can be based purely on an [[Ability Score]], in which case they can only benefit from the Ability Score Modifier.  More commonly, they will be a '''Skill Check''', where the Proficiency Bonus can be added as well if the creature is [[Proficiency|Proficient]] in the given [[Skill]].
 
== Skill Check ==
 
A '''Skill Check''' is a type of Ability Check tied to a [[Skill]] in which a creature may have [[Proficiency]].  The Skill also determines the Ability used for the Ability Score Modifier.
 
For example, when a trap is nearby, the game rolls a Perception Check (or in short, "rolls Perception").  Perception is related to Wisdom, so the creature's Wisdom Ability Score Modifier is applied.  If the creature is Proficient in Perception, then the creature's Proficiency Bonus is also added.
 
Proficiency in a [[Skill]] can be granted by [[Race]], [[Class]], or a [[Feat]] chosen when leveling up.
 
For example, all [[Elf|Elves]] have an innate feature called [[Keen Senses]] which grants them Proficiency in Perception.  Wood Elves have an additional feature called Mask of the Wild, which gives them Proficiency in Stealth.  [[Ranger]]s can gain Proficiency in a number of skills based on specific class features they choose at level 1: '''Bounty Hunter''' grants Proficiency in Investigation, '''Keeper of the Veil''' and '''Mage Breaker''' grant Proficiency in Arcana, and so on.
 
The [[Feats#Skilled|Skilled]] Feat, if chosen when leveling up, allows a creature to gain Proficiency in any three Skills.
 
Following is the list of Skills that a creature can be Proficient in, sorted by the Ability Score which the skill is related to:


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== Skills and proficiency ==
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== Contest ==
Most ability checks are associated with a specific [[Skills|skill]]. If a creature is proficient with an ability check's associated skill, they may add their proficiency bonus to the results of that roll, in addition to the relevant ability score modifier. These rolls are often referred to as "skill checks" by the community, although they are not referred to as such in-game.


A special type of Ability Check is called the Contest, in which two creatures both roll an Ability Check or Skill Check to contest each other, and one wins over the other. The creatures don't necessarily roll the same type of check.
[[Expertise]] in a skill allows a creature to add double its proficiency bonus. Expertise usually comes from specific class features.


An example of this is the [[Shove]] action, where the creature attempting the Shove must roll Athletics, and the defending creature is allowed to roll either Athletics or Acrobatics to contest the Shove.  If the attacker's roll is higher than the defender's, the Shove succeeds, otherwise it fails.
{{ProficiencyBonusTable}}


== Modifiers ==
==== Automatic rolls ====
Some ability checks are automatic. For example, when a creature approaches an unactivated trap, the game rolls a [[Perception]] ability check to determine whether the creation notices the trap. Perception is a Wisdom Skill, so the character adds their Wisdom modifier and, if proficient in Perception, their proficiency bonus to the ability check. Once the trap is discovered, the character can interact with it to attempt to [[Disarm]] it, which requires a successful [[Sleight of Hand]] check, a Dexterity Skill.


For reference, here are once again the Ability Score Modifier and Proficiency Bonus tables:
==== Ability checks during dialogue ====
Ability checks are also common during dialogue, where some responses require a ability check to determine the outcome. Examples include using Charisma-based skills like [[Persuasion]], [[Deception]] or [[Intimidation]] to influence others, or Intelligence-based Skills like [[Investigation]], [[History]] or [[Religion]] to determine or remember facts.


{{AbilityScoreModifierTable}}
==== Contest ====
A '''contest''' is a special type of ability check in which two creatures both roll an ability check to oppose each other, and one wins over the other. The creatures don't necessarily roll the same type of check.
 
An example of this is the {{SAI|Shove}} action. The creature attempting the Shove rolls Athletics, and the defending creature rolls either Athletics or Acrobatics (the game chooses the Skill with the highest bonus) to contest the Shove. If the attacker's roll is higher than the defender's, the Shove succeeds; otherwise it fails.


{{ProficiencyBonusTable}}
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[[Category:Gameplay mechanics]]
[[Category:Gameplay mechanics]]
Retrieved from "https://bg3.wiki/wiki/Ability_check"