Core Rules Traits are the tags that define a rules element’s broad place in the game system rather than its detailed battlefield behavior. A trait in Pathfinder 2e and Starfinder 2e is a keyword that conveys extra information and often tells you how other rules interact with that element. Core Rules Traits are the subset that answer foundational questions first: What kind of option is this? How common is it? What subsystem does it belong to?.
In practice, Core Rules Traits usually include three major families: rarity traits, option-type traits, and structural/action traits. Rarity tells you how available an option is; option-type traits tell you whether something is a General feat, Skill feat, ancestry-linked option, or other broad category; and structural traits tell you what rules framework it participates in, such as Directive or Skill. Unlike weapon or creature traits, these tags usually organize access, classification, and system behavior rather than directly altering damage, reach, or resistances.
Rarity traits govern how easy it is to access a rules element in play. In both PF2e and SF2e, options without a rarity trait are considered Common, while Uncommon, Rare, and Unique signal increasing levels of scarcity, restricted access, or narrative control. Common options are generally assumed to be broadly available, while rare and unique options typically require explicit GM inclusion, discovery in play, or faction/story-based access.
These traits tell you what broad rules category an option belongs to. A feat with the General trait belongs to the general feat category, while a feat with the Skill trait improves skills, grants new skill actions, or is chosen when a skill feat is gained. Similar category traits across PF2e/SF2e help readers determine where an option lives in the compendium and what advancement tracks or prerequisites apply.
Spell- Manifestations of Rift energies in Real Space
These are the traits that identify what kind of rules framework an action or effect belongs to. A Directive is a special order that benefits allies who follow it, while Skill on a feat or action marks it as part of the skill ecosystem. Hazard traits like trap, environmental, haunt, and complex are also part of this broader family because they tell the GM what subsystem logic to use when adjudicating the entry.
This group is especially important for Starfall article writing. Your rules articles often blend lore, stat blocks, and subsystem notes; structural traits are what keep those stat blocks anchored to recognizable game procedures instead of drifting into freeform prose.