The Æther Mirror: Æther LXVI (Malnondus, The Forsaken)

Malnondus is an ancient being capable of altering reality in fate through the power of wish granting. He was able to replenish his own lifeforce through wishes he would grant humans. When a human is granted a wish through his power, they parts of their lifeforce would be unknowingly siphoned off to rejuvenate him. The greater the wish the more energy siphoned. Despite his thousand year path of mayhem, he was eventually caught, bound and banished through magic to the Æther realm.