King Waria Shorthold - of whom it is told had his men burrow into the very core of the world to extract the most glorious metal, merely to make an enormous statue of himself - was a dreadfully vain, and also fearful king. On the first year of King Shortholds reign, a knife-wielding assassin had made his way past all the guards and into the kings main chamber, where he attacked the king, almost slaying him were it not for the king tripping on the hem of his robes whilst trying to get away, and falling on the assassin, knocking his head on the floor. Ever since that incident, the king has been deathly afraid that he might one day be de-throned or dispatched by some unforseen assailant, and after many long months of living in this dread, he could bear it no longer - he summoned the last TRUE diviner to his chambers, and ordered that he was not to leave the room on pain of death, until he had created a device which would allow him to be sure that he would ALWAYS be sure of his position, in the future. After three weeks of study, the diviner, much to his reluctance, placed a shard of glass - 10 inches by 10 inches - on a table, and then cast a powerful enchantment, thrusting his hand five minutes into the future through a time-loop, grasping that same shard of glass, and wrenching it back into the present. The glass seemed the same, and looking through it did no good, but the reflection of the glass, showed the reflection of five minutes into the future, of those who looked in it. Truly a powerful object - but the Diviner did not stop there…
And the king was pleased! He ushered the diviner out the door without thanks or payment in any form, and then set a stand - lined with gold and silver fillagree - by his throne, with the glass inset into it with a reflective backing. For exactly a month, the king found himself staring into that mirror, and gloating at the sight of himself, still seated on that throne with his smirk. After a month, however, during the night, the glass dulled ever-so-slightly. The next morning, when the king sat on his throne, and then stared into the glass, he saw himself, sitting there once again, smirking. After five minutes of this staring, however, the king spied movement behind his throne in the mirror. The king peered closer into the glass, curious, and abruptly, a dark-clad figure leapt out of the shadows behind his throne and pierced the future version of King Shorthold in the heart, killing him.
Ten minutes later, the kings advisor entered to find king Waria Shorthold Sprawled on the floor, dead. Further examination of his corpse found that the king had died of shock and terror. Before exiting the chambers to alert the guards, the advisor snuck a glance into the slightly-tinted mirror that the king was always glaring into, and he simply saw a reflection of himself, showing the guards the corpse of the king.
The last TRUE diviner died several weeks later, and it is said to those who knew him, that he had the look of utter content upon his features.
The last true diviner hated the king and all he stood for - vainness, arrogance and foolishness. Perhaps the diviner wanted the king dead - perhaps he even hired the FIRST Assassin, looking into the future to tell him which way to go so not to be seen. Either way, it does not matter, nor does what the diviners motives were. The cruel treatment that the king gave the diviner was enough for him to put a curse on that shard.
The Window of the Mind does show five minutes into the future, to an extent - the future, though, is also worked in with what the person WANTS to see - the king wanted to see himself seated on the throne, alive and well, and so he did. if a person wishes to look into the future to see if he will fight and slay the great dragon, the future most certainly WILL show him slaying the dragon as that would be what the person wants. But in truth, the dragon will probably snap him up in a second - though he still will fight the dragon.
The diviner placed a SECOND enchantment on the item, however - one that took place one month after it was made. After a small amount of time - 20 minutes or so, if one continues staring into it, it will show not the correct future, but a twisted future, including the worst fears of a person - the Kings worst fear was that he would be assassinated, and so that is what he saw. This future does NOT come true, but it may cause people to alter their judgement and make wrong moves.
the Diviners purpose in altering this was simply to prey on those similar to the King - those vain (that would look in the mirror frequently), and those foolish enough to trust fate into a mere object.