Editing SeventhSun:Rules (section)

== Core Procedures ==

=== The Basic Roll ===

<div class="ss-rule-formula">'''3d6 + Attribute + Skill ≥ target number'''</div>

The target number is a Difficulty, Defense, or Resistance. Roll only when the outcome is uncertain and failure would matter. If a capable character has enough time, proper equipment, and no meaningful opposition, the action succeeds without a roll.

=== Difficulties ===

{| class="wikitable codex-table ss-rules-table"
! Difficulty
! Description
! Use
|-
| 9
| Routine under pressure
| Only uncertainty, haste, or impairment makes this worth rolling.
|-
| 12
| Challenging
| A trained person with a useful Attribute succeeds more often than not.
|-
| 15
| Difficult
| Calls for ability, expertise, or favorable circumstances.
|-
| 18
| Formidable
| A serious challenge even for an accomplished hero.
|-
| 21
| Extraordinary
| Beyond ordinary professional competence.
|-
| 24+
| Legendary
| Reserved for deeds that should astonish witnesses.
|}

=== Bonus and Penalty Dice ===

A favorable circumstance grants a bonus die: roll 4d6 and keep the highest three. An unfavorable circumstance imposes a penalty die: roll 4d6 and keep the lowest three. One bonus die cancels one penalty die. Additional dice of the same kind do not stack; judge the situation as a whole and roll at most one bonus or penalty die. Attributes, Skill ratings, weapon damage, Protection, and other intrinsic scores remain fixed numbers.

=== Degrees ===

The amount by which a roll succeeds or fails may matter. A margin of 5 indicates a strong result or serious complication; a margin of 10 indicates an exceptional result or decisive failure. The Narrator describes the consequence rather than consulting a separate table for every activity.

=== Who Rolls ===

The character driving the action rolls. An attacker, deceiver, coercer, or phasm user rolls against the target’s Defense or relevant Resistance. When an impersonal danger such as poison, weather, or a collapsing structure threatens a character, that character rolls an Attribute or Skill against a Difficulty. Never roll for both sides. Ordinary weapon damage requires no defensive roll.
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