balancing_legend_global_var_effect

balancing_legend_global_var_effect = {
	if = {
		limit = {
			NOT = { has_global_variable = legend_count_var }
		}
		set_global_variable = {
			name = legend_count_var
			value = 1
		}
	}
	else = {
		change_global_variable = {
			name = legend_count_var
			add = 1
		}
	}
}

As written in game/common/scripted_effects/06_dlc_ce1_legend_effects.txt.