Honestly, I’m never fully convinced by the ‘runes make necromancy stronger’ trope unless the author really digs into the trade-offs. In a lot of urban fantasy I’ve read, they’re just shiny plot coupons—carve the right symbol, get a bigger zombie. But that one indie series, 'Bone Tongue Script', did something clever. The runes weren’t amplifiers; they were containment fields. The power came from the necromancer's own life force, and the runes just shaped it, kept it from spilling back on them. The more complex the pattern, the finer the control you had over a spirit's autonomy, not just its raw strength. Made the magic feel costly and fragile, which is how raising the dead should feel.
When it’s treated as simple power-boosting, it kinda cheapens the whole vibe. The best examples tie the rune’s form to a specific function—one symbol for binding, another for memory extraction from a corpse, a third for sustaining decay. Otherwise, it’s just magic duct tape.