ep3_adventurer_sponsorship_valid_trigger

ep3_adventurer_sponsorship_valid_trigger = {
	scope:attacker.var:adventurer_invasion_supporter ?= {
		var:adventurer_invasion_target ?= scope:defender
		NOR = {
			this = scope:defender
			top_liege = scope:defender.top_liege
			is_allied_to = scope:defender
			is_spouse_of = scope:defender
			AND = {
				is_close_family_of = scope:defender
				opinion = {
					target = scope:defender
					value >= -25
				}
			}
			has_relation_friend = scope:defender
			has_relation_lover = scope:defender
			any_character_war = {
				primary_attacker = scope:attacker.var:adventurer_invasion_supporter
				primary_defender = scope:defender
			}
		}
		in_diplomatic_range = scope:defender
	}
}

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