Mad dream this morning, so grand in scale that it's hard to describe it really.

A shaman of sorts predicted that the Earth would soon come under siege by a giant entity from outer-space. Everyone was in training to defend the Earth from this upcoming threat. I was practicing water-bending and discovered I could create a whirlpool which I could use to teleport to and from. Without warning the earth beneath us started to rumble, and apparently this giant space-crab had landed on the other side of the planet and impaled its claws all the way through the Earth and they had sprung up out of the earth near me. Soon enough the giant space-crab was in the sky looming above everyone and it was raining giant spikes down upon us. I was narrowly escaping death thanks to my water teleportation. The earth went into a state of near-extinction, the planet was pretty much empty and I had no idea whether my family or friends survived. People were scavenging for shelter and any way to survive the constant threat.