At the centre of any great religion it is not uncommon to find one such entity. These beings worshiped for their power grant their blessings to those around them, sharing only with those upon whom they resonate in mind and soul.
While these beings of pure energy can be said to be mindless and without thought of their own, there is no doubt that some force even greater than their own drives them; the will of god as any devout believer will claim. But perhaps it is the will of a far more primal force that drives them.
As their power only spreads to those who share a like-minded will; they naturally draw in those who share the same ideology as the primal force their strength originates. And in turn, those who's ideals clash with these beings will find themselves eradicated without mercy.
Once playful spirits who happily swam within the calm and gentle waters of the cleanest of lakes. There were the caretakes, the purifiers of water who brought joy and life to the nearby wildlife, and the odd prank.
That however changed one night..
It started with just the one, a single battle-worn sword. It was the weapon of a once great man, slain by the cruel beast that is war. Perhaps those who tossed the blade had believed or at least hoped, that the sins of their lord would be cleansed alongside his bloodstained weapon should it come to rest in the waters of the finest purity.
Confused, the kind sprits fulfilled their only know duty; they cleaned the blade and returned it to the world of man...
It was a blade like no other, a blade without impurity capable of cutting through the toughest of steel.
There was once a blade like no other, devoid of all impurity truly befit of a king. A single swing of this blade was said to fell an entire battalion. Its power drew the eyes of envy, greed and lust. Even a mere soldier could be a mighty warrior if only they had such a weapon.
Lead by the story of the King Sword's origin a lowly squire set off on pilgrimage to the ancient lakes of pure. As did a lone knight who had previously laid his fallen lord's weapon to rest at the depths of the lake, the squire too discarded his weapon.
And so, one night while drinking off his regret and admonishments at behest of his father for believing such a fools tale; he stumbled upon his family blade embedded in his family estate's stone fountain, refined beyond all reason.
This began the start of a trend, to throw one's weaponry into the nearest lake on the off chance of its return. As one may guess the Nymphs of the lakes did not take kindly to this and now defend their waters with the very blades discarded within.
It is said that the ancient civilisations were capable of creating complex devices which utilised mana as their primary source of power. While the theory remains, the high purity mana-crystals and the magically conductive mana-stone used in said constructs are now far rarer than the times of old.
Many have attempted to raid the ancient's temples in an attempt to claim the very core of their power. However due to said core's tendency to violently repel those unrecognised as 'admin', very few are successfully retrieved un damaged.
However that may soon change with the invention of a new type of Energy Core, one which uses magnetic forces to produce electricity. Now they just need to figure out how to program it not to zap everyone and anyone who comes into range.