ep3_adventurer_landless_allowed_against_character_trigger

ep3_adventurer_landless_allowed_against_character_trigger = {
	is_landed = yes
	# Players vs. AI filtering.
	OR = {
		# Can always target the AI.
		is_ai = yes
		# Cannot target a player unless they completely control at least two duchies.
		any_sub_realm_duchy = {
			count >= 2
			save_temporary_scope_as = player_controlled_duchy
			# Custom description to suppress errors.
			custom_description = {
				text = SUPPRESS
				scope:defender = { completely_controls = scope:player_controlled_duchy }
			}
		}
	}
	# Scope:defender cannot be liege of attacker.
	scope:defender = {
		this != scope:attacker.liege
	}
}

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