In the book I am writing, certain people can use a hard magic system with the usage of outside or supplemented energy. I originally thought some sort of liquid energy that comes from springs on the planet could fuel this, but I would like other ideas.
Are there any other possible sources of energy that I should consider to power my magic system?
What way could this new energy be produced or harvested, or what would be an efficient way to harvest the energy liquid?
- I would prefer the energy source to be an external source.
- The tech available is Industrial Revolution era.
- The energy source should be something that is renewable or continually produced, but it should be relatively uncommon.