South Park: The Stick of Truth -
Cast Dragon Shout on Phillip, and then Cup-a-Spell on Terrence. Finally, show them the Squeaker. They will teach you the last spell, Nagasaki. During the training, keep holding the spell down, this is a way to cause an earthquake. Hold the spell for as long as the trembling wall crumbles. With the new ability, go to Quebec Catacombs, to the North of Ottawa.