The trait is "Imposter" in the text files:
Code:
Trait Imposter
Characters family
ExcludeCultures barbarian, nomad, carthaginian, egyptian
NoGoingBackLevel 4
AntiTraits Not_Client_State_Ruler
Level Imposter
Description Imposter_desc
EffectsDescription Imposter_effects_desc
GainMessage Imposter_gain_desc
Threshold 1
Effect Law -2
Effect Unrest 2
Level Imposter2
Description Imposter2_desc
EffectsDescription Imposter2_effects_desc
GainMessage Imposter2_gain_desc
Threshold 2
Effect Law -4
Effect Unrest 4
Level Imposter3
Description Imposter3_desc
EffectsDescription Imposter3_effects_desc
GainMessage Imposter3_gain_desc
Threshold 4
Effect Law -6
Effect Unrest 10
How is it gained? Be a "Family Member"
Code:
;------------------------------------------
Trigger Client_State_Ruler_Imposter_01
WhenToTest CharacterTurnEnd
Condition Trait Family_Member = 1
and EndedInSettlement
and IsGeneral
and SettlementBuildingExists = client_state
and Trait City_Has_Governor > 0
and not Trait AIGeneral > 0
Affects Imposter 1 Chance 100
;------------------------------------------
Trigger Client_State_Ruler_Imposter_02
WhenToTest CharacterTurnEnd
Condition IsGeneral
and not EndedInSettlement
and Trait Imposter > 0
and not Trait AIGeneral > 0
Affects Not_Client_State_Ruler 4 Chance 100
Yeah, being a Family member is only relevant for a few factions, Rome, Greek Cities (but not Sparta or swap factions).
Code:
{Family_Member} Family Member
{Family_Member_desc}
This man is a member of the ruling family. (For Greek, Eastern and Roman players only: Using this man as the Governor of a 'Client State' could cause problems and resentment....even outright revolt.)