The Lifestram is a current of Aether that flows through all things, including the planet itself and all living beings. When something is born, it is given aether from the Lifestream, and the current will flow through them. This current is what gives living beings the ability to use magic. When a living being dies, their aether returns to the Lifestream. This cycle continues in perpetuity, in an endless cycle of life and death.