When sung by a nation in their respective lanugauge, ‘Marukaite Chikyuu’ and to a lesser extent, ‘Hatafutte Parade’ becomes a powerful spell that can destroy landmasses and more. As more nations add their song, the more powerful it grows. There is an agreement among the nations never to use this against one another in petty acts of war It is reserved for higher things than that.
The last time it was used was a joint effort by multiple Ancients to rid of a city that was intending to destroy the Earth. Atlantis was never seen again.