Few have ever seen the incomprehensible entities known as Trench Dwellers, but their lethal biomechanical machines remain, guardians of a long-forgotten empire.
In the dawning of time, a mighty civilization, mystical and alien, flourished in the oceanÃ¢??s unseen depths. Their day has passed, but their hidden metropoli linger on.
Believable magic, like ordinary physicis, operates according to some invariable laws that always result in some kind of cost or "bounce back". The grater the magic, the more it should cost the character physically, emotionally, and spiritually.