log_harm_event_death_as_variable_effect

log_harm_event_death_as_variable_effect = {
	if = {
		limit = { always = no }
		if = {
			# Only track noteworthy characters.
			limit = { harm_game_rule_valid_for_logging_trigger = yes }
			add_to_global_variable_list = {
				name = harm_deaths_list
				target = root
			}
		}
	}
	# And, for error suppression.
	if = {
		limit = { always = no }
		if = {
			limit = {
				global_variable_list_size = {
					name = harm_deaths_list
					value >= 1
				}
			}
		}
	}
}

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