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Live notes

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    Roll reference

    2024 core / D&Z v4.2 / DM rulings

    DC & roll basics

    Check: attempting a task. Save: resisting an effect. Attack: trying to hit a target's AC.

    Roll d20 + the relevant modifier. Add proficiency only when applicable, and only once. A listed skill or save bonus usually already includes it. Meeting the DC or AC succeeds.

    Advantage: roll 2d20 and keep the higher. Disadvantage: keep the lower. If both apply, roll one d20.

    DifficultyDC
    Very easy5
    Easy10
    Medium15
    Hard20
    Very hard25
    Nearly impossible30

    Use a rule's specific DC before this general scale. Only call for a check when the outcome is uncertain; a natural 20 or 1 is not automatic success or failure on an ordinary check or save. Attacks and death saves have their own rules.