My magic system allows the transfer of quantities of certain properties from one object to another. For instance, electrical conductivity from metal to rubber -- the metal becomes less conductive, and the rubber becomes more conductive.
To transfer properties, you need special equipment and fuel proportional to the quantity to be transferred. The fuel is decently difficult to create.
There would be a point of diminishing returns, after which exponentially more of a property must be taken from one material to give a lesser amount of the property to the other material.
This is the list of material properties I am considering (I am trying to narrow this list down to 7 properties):
- Electrical conductivity
- Thermal conductivity
- Specific heat
- Boiling point
- Melting point
- Freezing point
- Tensile strength
- Resistance to corrosion
- Flammability (Ignition temperature)
I definitely want the magic to add a sense of wonder, and I would like to have fun with the weird, impossible materials that this magic could create. At the same time, I worry that some materials would become extremely absurd or difficult to explain. Harder, denser steel makes intuitive sense. Elastic, flammable, magnetic diamonds with a low melting point are less intuitive. I also worry that the magic system would be extremely imbalanced due to the min/maxing that could be done.
Should any of the listed properties be mutually exclusive to balance the magic or make the behavior of materials predictable? For example, making elasticity and hardness inversely proportional, such that adding elasticity reduces hardness. (As opposed to an elastic diamond that retained diamond-level hardness.)