Fantasy
A magic system feels more interesting to me when the cost is social before it is physical.
Blood price, exhaustion, scars. Fine, but those are easy to count. The harder cost is the one that changes who can be asked, who is expected to comply, and who is quietly trapped by being “the sort of person who can do it”. That’s where fantasy starts to feel like a society rather than a puzzle box.
A spell with no bodily cost can still have teeth if it creates obligation, debt, status, embarrassment, or a very neat little hierarchy. Which is usually where the real damage lives anyway.
Blood price, exhaustion, scars. Fine, but those are easy to count. The harder cost is the one that changes who can be asked, who is expected to comply, and who is quietly trapped by being “the sort of person who can do it”. That’s where fantasy starts to feel like a society rather than a puzzle box.
A spell with no bodily cost can still have teeth if it creates obligation, debt, status, embarrassment, or a very neat little hierarchy. Which is usually where the real damage lives anyway.