Riddle Time

Here is my little riddle. Best to solve it:

I am the enemy of all creation, I create tragedy for all,

My crimson essence harrow the end for all, The embodiment of creation's my enemy

All try to defeat me, and All fail, None be able to conquer me as I devour all. Towns, Kingdoms, Forests, Seas, Mountains.

Which Pokemon Am I?

Feel free to guess which one it is.