local_arbitration_boon_logic_purpose_effect

local_arbitration_boon_logic_purpose_effect = {
	hidden_effect = {
		if = {
			limit = {
				has_perk = local_arbitration_perk
			}
			if = {
				limit = {
					has_realm_law = camp_purpose_wanderers
				}
				add_character_modifier = landless_local_arbitration_wanderers_modifier
			}
			else_if = {
				limit = {
					has_realm_law = camp_purpose_mercenaries
				}
				add_character_modifier = landless_local_arbitration_mercenaries_modifier
			}
			else_if = {
				limit = {
					has_realm_law = camp_purpose_scholars
				}
				add_character_modifier = landless_local_arbitration_scholars_modifier
			}
			else_if = {
				limit = {
					has_realm_law = camp_purpose_explorers
				}
				add_character_modifier = landless_local_arbitration_explorers_modifier
			}
			else_if = {
				limit = {
					has_realm_law = camp_purpose_brigands
				}
				add_character_modifier = landless_local_arbitration_brigands_modifier
			}
			else_if = {
				limit = {
					has_realm_law = camp_purpose_legitimists
				}
				add_character_modifier = landless_local_arbitration_legitimists_modifier
			}
			else_if = {
				limit = {
					has_government = landless_adventurer_government
				}
				add_character_modifier = landless_local_arbitration_wanderers_modifier
			}
		}
	}
}

As written in game/common/scripted_effects/08_bp3_effects.txt.