Descendants of Magic

Long ago, in the age of castles and where weapons were swords and arrows... GOD down to the earth.

God, the same one mentioned in the Bible, gave humans magic. 
The elemental magic. Fire , Water   , Air   , Earth    and Thunder   .

Humans used it well at first, there was nothing but peace, happiness and prosperity. 
But, ambition consumed the souls of many, and this got out of control. Some yearned for the crown of kings or legitimate leaders at the time. There were great massacres and battles.

And God was sad.
¿The punishment? Sinners lost their humanity, their likeness to God.