# Intelligence Intelligence measures mental acuity, accuracy of recall, and the ability to reason. ## Intelligence Checks An Intelligence check comes into play when you need to draw on logic, education, memory, or deductive reasoning. The [[Arcana]], [[History]], [[Investigation]], [[Nature]], and [[Religion]] skills reflect aptitude in certain kinds of Intelligence checks. ### Other Intelligence Checks The DM might call for an Intelligence check when you try to accomplish tasks like the following: - Communicate with a creature without using words - Estimate the value of a precious item - Pull together a disguise to pass as a city guard - Forge a document - Recall lore about a craft or trade - Win a game of skill ## Spellcasting Ability [[Artificer|Artificers]] and [[Wizard|wizards]] use Intelligence as their spellcasting ability, which helps determine the saving throw DCs of spells they cast. Some classes have subclasses which also use Intelligence as their spell casting ability. Sub classes like [[Fighter#Eldritch Knight|Eldritch Knight]] and [[Rogue#Arcane Trickster|Arcane Trickster]].