can_start_new_legacy_track_trigger

can_start_new_legacy_track_trigger = {
	dynasty ?= {
		OR = {
			NOT = { has_dynasty_perk = blood_legacy_1 }
			has_dynasty_perk = blood_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = warfare_legacy_1 }
			has_dynasty_perk = warfare_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = law_legacy_1 }
			has_dynasty_perk = law_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = guile_legacy_1 }
			has_dynasty_perk = guile_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = erudition_legacy_1 }
			has_dynasty_perk = erudition_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = glory_legacy_1 }
			has_dynasty_perk = glory_legacy_5
		}
		OR = {
			NOT = { has_dynasty_perk = kin_legacy_1 }
			has_dynasty_perk = kin_legacy_5
		}
		OR = {
			NOT = { has_fp1_dlc_trigger = yes }
			NOT = { has_dynasty_perk = fp1_adventure_legacy_1 }
			has_dynasty_perk = fp1_adventure_legacy_5
		}
		OR = {
			NOT = { has_fp1_dlc_trigger = yes }
			NOT = { has_dynasty_perk = fp1_pillage_legacy_1 }
			has_dynasty_perk = fp1_pillage_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = hybridize_culture }
			NOT = { has_dynasty_perk = ep1_culture_legacy_1 }
			has_dynasty_perk = ep1_culture_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = the_fate_of_iberia }
			NOT = { has_dynasty_perk = fp2_urbanism_legacy_1 }
			has_dynasty_perk = fp2_urbanism_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = the_fate_of_iberia }
			NOT = { has_dynasty_perk = fp2_coterie_legacy_1 }
			has_dynasty_perk = fp2_coterie_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = legacy_of_persia }
			NOT = { has_dynasty_perk = fp3_khvarenah_legacy_1 }
			has_dynasty_perk = fp3_khvarenah_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = tours_and_tournaments }
			NOT = { has_dynasty_perk = ep2_activities_legacy_1 }
			has_dynasty_perk = ep2_activities_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = legends_of_the_dead }
			NOT = { has_dynasty_perk = ce1_heroic_legacy_1 }
			has_dynasty_perk = ce1_heroic_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = legends_of_the_dead }
			NOT = { has_dynasty_perk = ce1_legitimacy_legacy_1 }
			has_dynasty_perk = ce1_legitimacy_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = roads_to_power }
			NOT = { has_dynasty_perk = ep3_administrative_legacy_1 }
			has_dynasty_perk = ep3_administrative_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = khans_of_the_steppe }
			NOT = { has_dynasty_perk = mpo_nomad_legacy_1 }
			has_dynasty_perk = mpo_nomad_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = all_under_heaven }
			NOT = { has_dynasty_perk = tgp_chinese_legacy_1 }
			has_dynasty_perk = tgp_chinese_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = all_under_heaven }
			NOT = { has_dynasty_perk = tgp_japan_legacy_1 }
			has_dynasty_perk = tgp_japan_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = all_under_heaven }
			NOT = { has_dynasty_perk = tgp_sea_legacy_1 }
			has_dynasty_perk = tgp_sea_legacy_5
		}
		OR = {
			NOT = { has_dlc_feature = by_god_alone }
			NOT = { has_dynasty_perk = pam_legacy_1 }
			has_dynasty_perk = pam_legacy_5
		}
	}
}

As written in game/common/scripted_triggers/00_dynasty_triggers.txt.