gok_desirable_vassal_trigger

gok_desirable_vassal_trigger = {
	OR = {
		ai_boldness <= low_negative_ai_value
		has_trait = loyal
		is_obedient_to = scope:gok
		has_any_good_relationship_with_character_trigger = { CHARACTER = scope:gok }
		AND = {
			exists = scope:gok.dynasty
			dynasty ?= scope:gok.dynasty
		}
		is_allied_to = scope:gok
		opinion = {
			target = scope:gok
			value > 20
		}
		#Dukes from pliant cultures are cool
		AND = {
			highest_held_title_tier < tier_kingdom
			culture = {
				OR = {
					has_cultural_tradition = tradition_loyal_soldiers
					has_cultural_tradition = tradition_pacifism
					has_cultural_tradition = tradition_xenophilic
					has_cultural_tradition = tradition_modest
					has_cultural_tradition = tradition_fp2_malleable_subjects
				}
			}
		}
		trigger_if = {
			limit = {
				faith = scope:gok.faith
			}
			opinion = {
				target = scope:gok
				value >= -20
			}
		}
	}
}

As written in game/common/scripted_triggers/09_mpo_greatest_of_khans_triggers.txt.