The Oldquake

The Oldquake was an ancient event, now in the history book of Aurrum. It's also described as the "End of Aurrum".

An ancient spirit, only known as The Grandmaster, foresaw certain events concerning the future of the Aurrum Island. It was said that a massive earthquake would destroy the island and everything on it, thus the spirits had to leave as soon as possible.

Though they didn't know the Oldquake is caused by the guardian dragons losing their powers, The Grandmaster gave them some of his energy to keep the island safe after the spirits left. Some years later the humans found the island and inhabited it.

The events of the Oldquake are most likely to happen again in the future, since the guardians keep losing their powers slowly.