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A natural roll is any roll that is made with a d20 before modifiers. These natural rolls may activate some class features, feats or magic items, but are otherwise not often a factor.

There are two special instances of natural rolls, which apply during attack rolls:

  • Natural 20 - For an attack roll, results in an automatic hit, and likely a Critical Hit (also known as "Crit").
  • Natural 1 - For an attack roll, results in an automatic miss.


  • Very often, DMs may inject house rules to apply natural 1 or Natural 20s to have other effects. In some cases, these may be benign such as having them automatically pass or fail a skill check or saving throw, but can often appear as dangerous combat where a natural 1 causes an automatic crit on all your party members.