Mortal Crystals

This was kind of just my own idea becuase I know some of you guys don't like using the chaos emeralds....'''I will try my best to make the Mortal Crystals as realistic and not overpowered...If I do, please leave a comment on what you think is overpowered or confusing. But if you do, please leave at least one suggestion on how I could fix that error'''....Thanks so much for reading this top part, I know it's really not that great!

Mortal Crystal Origin
Mortal Crystals in ancient times were thought to be godly and all powerful. Often dieties and religous symbols have been modeled after the crystals' power, as it seemed supernatural and godly. The truth was, Mortal Crystals were invented not too long before the Overlanders or Mobians even existed to send messages to the future. The war between the two species was predicted after signs of the Mobian race began appearing. And only one scientist, Marly Bo, was able to win the war for the Overlanders and terminate the Mobian species. There was no way Bo would have survived to the time the war came, and he dedicated the rest of his life to ways he could preserve himself.

After 30 years, Bo created an artificial crystal that could grow and reproduce. Using genetic cloneing and properties in preservatives, he made the crystal able to support his conciousness. The crystal absorbed all the data in a mortal being's brain, also draining them of all energy, killing them. When he tested a group of rats, the conciousness was preserved after a great deal of time, but only after possesing a host, and also killed the rat it had once lived in. After placing some crystal deep into a mine, the bacteria in the crystal duplicated and grew. Very slowly, but it eventually it grew throughout the mine on thin sheets that coated the walls. Marly Bo had successfully harnessed a living thing's energy and created immortality...sorta.

Mortal Crystal Weaknesses
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Mortal Crystal Benders
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Other Uses For Mortal Crystals
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Rules For Using Mortal Crystals
(more will be added later -w-)
 * Mortal Crystals should never be used to bring someone back from the dead. If they are used for that purpose, the crystal's energy will go crazy and fatally wound the person who was trying to bring the person back to life, and the person who was once dead. The Mortal Crystal does not identify any energy, and creates energy for the lifeless body. The person is then alive, but they will awake only to die again becuase the remains will be splattered everywhere. Not pretty.
 * Mortal Crystals should never be used to kill anyone. While they do damage, they do this by taking energy from the person and making them weaker. If the Mortal Crystals suck out all of the energy, the energy will be shot out to the user where the enery will possess the user forever.
 * Mortal Crystals WILL NOT turn your character into the super form! While they can inhance strength very slightly, it is not reccomented becuase the user will feel very weak after, and can result in heart attacks and even death.