Difficulty Class

For a comprehensive summary of the mechanics behind all rolls and modifiers, see Die Rolls.

Difficulty Class (or DC) is a number that must be matched or exceeded to achieve success when rolling for Ability Checks, Attack Rolls, or Saving Throws.

When attempting to beat a Difficulty Class, the die rolled is a  d20. The modifiers applied to this roll vary, depending on the circumstances and the type of check.

• Rolling a 1 on a d20 always fails.
• Rolling a 20 on a d20 always succeeds (except Ability Checks).