Calamities

A Calamity is the term that's been given to the events that immediately lead up to time mysteriously being reset by an unknown force.

How Calamities (generally) work
Calamities only occur when something catastrophic would otherwise befall the Continent of Arcerra. Everything directly relating to the problem at hand is either straight up deleted, reset to a point where it wasn't a problem, or reset to a point where it didn't exist.

For Example:
 * If the Region Tyrants suddenly became hellbent on destruction and ruined Arcerra, the destruction of the continent at the hands of the Tyrants would be known as a Calamity and they would be reset to the point in time where they were (relatively) peaceful.

Slightly easy, right?
 * If somebody ruined the environment and made Arcerra uninhabitable, that would be knows as a Calamity, and then the person in question would be deleted forever and nature would be brought back to its flourishing state.
 * If pollution and corruption were about to spell the end...well, we'll see.

1st (The Nebula Skyfall)
Not technically a Calamity from this Definition. But it was still a Calamity.

Origin collides with the moon and breaks. The Aura, Ethraksha and Pallobalt that the meteor contained within fell to Earth. Its rotation speed dropped significantly and it was moved closer to the sun. Earth's mass also increased sevenfold. Aura and Ethraksha is poisonous, and now it covers the entire planet. Humanity had no moon to flee to since that was obliterated, and Mars was still too far away. Retreating underground was their only option.

Most of the world's continents merged together to form Arcerra. Most...most.

1.5th (The Divine Blessing)
L.U.C.Y creates Tomahtra and uses it to trigger the Divine Blessing. This made all life on Earth dependant on Ethraksha to survive, however, but it was a small price to pay.

2nd (Extinction Event)
Cause: The Original Predater was killed by a human who was twisted into an abomination by the Faux Paradise, heaven-turned-hell. His most devout followers, Cdnnzoa and Gurass, went on a rampage and eradicated humanity. The Faux Paradise was invaded and destroyed.

What was reverted: Humanity was brought back, along with the Faux Paradise.

3rd (The Divine Reset)
Cause: Arcerra's ecosystem was destroyed. Magic as made Obsolete. Humanity had their L.U.C.Y Gene irreversibly replaced by a weaker version of an Arkin's.

What was reverted: Practical knowledge of Technology. The state of all existing technology. Reigon Tyrants. Arkin.

4th (No Name Yet)
Cause: Region Tyrant dies during a Nebula Skyfall.

What was reset: All Ethraksha. Then the state of the Contient.

Trivia
L.U.C.Y has been present during every Calamity besides the first.

The 1st and 1.5th aren't technically Calamities since nothing was reverted.