try_to_set_event_recurrer_relationship_effect

try_to_set_event_recurrer_relationship_effect = {
	if = {
		limit = {
			save_scope_as = liege_temp
			any_relation = {
				type = event_recurrer
				# Only count recurrers that are still useful: if they've been demoted or incapacitated, someone should fill the gap.
				is_valid_active_event_recurrer_trigger = { LIEGE = scope:liege_temp }
				# We don't want too few, don't want too many.
				count < 5
			}
		}
		set_relation_event_recurrer = $TARGET$
	}
}

As written in game/common/scripted_effects/00_laamp_effects.txt.