can_raid_trigger

can_raid_trigger = {
	OR = {
		# Government logic.
		government_has_flag = government_can_raid_rule
		## Admin - Frontier themes
		vassal_contract_has_flag = admin_theme_can_raid
		## Clan - Ghazi
		vassal_contract_has_flag = vassal_contract_allow_raiding
		# Faith Logic.
		faith = { has_doctrine_parameter = faith_can_raid }
		has_personal_tenet_flag = unlock_destruction_raid_intent_personal
		# Dynasty logic.
		dynasty ?= {
			OR = {
				can_raid_dynasty_modifiers_that_enable_raiding_overseas_list_trigger = yes
				can_raid_dynasty_modifiers_that_enable_raiding_overland_list_trigger = yes
			}
		}
		# House logic.
		house ?= {
			OR = {
				can_raid_house_modifiers_that_enable_raiding_overseas_list_trigger = yes
				can_raid_house_modifiers_that_enable_raiding_overland_list_trigger = yes
			}
		}
		# Cultural logic.
		## With restrictions.
		AND = {
			can_raid_cultural_parameter_requirements_for_non_tribals_trigger = yes
			culture = {
				OR = {
					has_cultural_parameter = culture_can_raid_at_sea_even_if_feudal
					has_cultural_parameter = culture_can_raid_over_land_even_if_feudal
				}
			}
		}
		## Without restrictions.
		culture = {
			OR = {
				has_cultural_parameter = culture_can_raid_at_sea_even_if_feudal_no_restrictions
				has_cultural_parameter = culture_can_raid_over_land_even_if_feudal_no_restrictions
			}
		}
		# Trait logics.
		## With restrictions.
		AND = {
			can_raid_trait_flag_standard_requirements_trigger = yes
			has_trait_with_flag = trait_enable_raiding_per_standard_restrictions
		}
		## Without restrictions.
		has_trait_with_flag = trait_enable_raiding_without_restrictions
		has_variable = enable_raiding_without_restrictions
	}
	# Some faiths prohibit this.
	OR = {
		NOR = {
			rite ?= { rite_has_parameter = holy_wars_forbidden }
			rite ?= { rite_has_parameter = tenet_peace_of_god_raid_ban }
			government_has_flag = government_is_landless_adventurer
		}
		# But not for Nomads or Wanua
		government_has_flag = government_is_nomadic
		government_has_flag = government_is_wanua
	}
	is_landed = yes
}

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