Continuing the sequence, this is how things could go wrong. If a high-powered maginaria gets smart and ambitious enough to buck the system, manifest physically, and start taking chroma by force, that's where demons come from. Their power can warp the world around them - demon-Piper would, for instance, cause water to spontaneously float in the air or go shooting off in random directions. Demons will attack settlements if they feel like it, which is one reason adventurers stay around.
The official server of XenoNet and the City of Elseways.