The Blood Moonstone

In the beginning, war, famine, and pollution, ruined the Earth. The flames of war burned so brightly that its glow rivaled its neighboring planets. From those flames, from the fissures in the crust created through the humans' destructive wake, a deep, dormant force was awakened. The life force of planet Earth, hidden beneath the crust, was unleashed. Time was forced to reverse. Cities collapsed, society crumbled, technology was forgotten, and humanity found itself in the coming of its second middle ages. In order to protect the Earth from facing that same destruction again, the force that now flowed freely through the veins of the planet, created a system to keep order and bring peace. From its core seven jewels, High Gemstones, were birthed, filled with the presence and power of the life-force. Each represented a fragment of nature: Life, time, growth, health, change, strength, and death. Through these, a connection was formed, and a chain circle of balance was held strong. To six new rulers, six of these gemstones fell, and six kingdoms rose in their names. Each protected their stone with their power and upheld peace, and in turn, gained a connection to the life-force and incredible new strengths. The circle of peace was strong, and the people called this life-force Hylaia, and Hylaia became their goddess and protector. Wars became a distant thing of the past... ruin and destruction, history long buried under the ash of the old world.
However, the seventh of these jewels never found its Ruler. It was never seen, never spoken of. The essence of death; it was hidden in the far north to never be wielded, as the people feared its evil power, and it began to destroy the land around it. It has now become a thing of legend, and stories say many have attempted to find and wield its great strength, yet all have perished to its power. To this day, it remains lost. And now... Something has unburied it from its historic prison.