Modifier
Rule
Modifiers adjust your Test TotalTest Total RuleYour Test Total is your Flat roll adjusted by relevant Modifiers.. Bonuses (positive Modifiers) add to your Flat RollFlat Roll RuleYour Flat Roll is the number shown on the twenty-sided die face after you roll it.. Penalties (negative Modifiers) subtract from it.
Core Rule—Modifiers
- Multiple instances of FortuneFortune RuleFortune is a Modifier that grans a bonus to your Flat Roll. or MisfortuneMisfortune RuleMisfortune is a Modifier that imposes a penalty to your Flat Roll. do not stack. Roll only once.
Source Player Codex