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Chapter 13: Pathfinder Legacy / Character Conversion

Key Ability Score

Source Starfinder Core Rulebook pg. 503
Each class in Starfinder denotes one of the six ability scores as that class’s key ability score, and certain calculations (such as DCs for abilities) are based on that score’s modifier. If you are using a Pathfinder RPG class, you will need to assign a key ability score for that class. In some cases, this will be obvious: a spellcasting class’s key ability score is often the same ability score that grants that class bonus spells. The following chart suggests the key ability score for the classes found in Pathfinder RPG Core Rulebook, Pathfinder RPG Advanced Player’s Guide, Pathfinder RPG Ultimate Combat, Pathfinder RPG Ultimate Intrigue, and Pathfinder RPG Ultimate Magic; classes that list several ability scores work much like the soldier, in that the player can choose the score that is the most important to him for both mechanical effects and for thematic concerns.  

Pathfinder RPG ClassKey Ability Score
AlchemistIntelligence
BarbarianConstitution
BardCharisma
CavalierStrength or Dexterity
ClericWisdom
DruidWisdom
FighterStrength or Dexterity
GunslingerDexterity
InquisitorWisdom
MagusIntelligence
MonkWisdom
OracleCharisma
PaladinCharisma
RangerDexterity or Wisdom
RogueDexterity
SorcererCharisma
SummonerCharisma
VigilanteCharisma
WitchIntelligence
WizardIntelligence