I'm making a setting where ghost PCs are a thing. These

Iron? Salt?

>>52959929
wood from certain trees?
Metal from specific regions?

>The wood from the Aberdash tree, isn't the strongest wood, but it has the additional effect of stopping ghosts

>The metals from the volcanic region of Bumblevolcanofuckville, make weak weapons, but will stop ghosts

>>52959929
iron
salt
flesh, specifically living human flesh
flesh, specifically NONliving human flesh
moving water
dense metals, originally thought to be gold, turns out to be several related compounds.

>>52959929
Copper. It's in wiring, and ghosts might be made of some electromagnetic radiation stuff. Copper's common as hell, it's in wiring, in electronics, and consumer goods too. It's a nice way of saying "Hey don't go through some walls, you might run into wiring"

>>52959929
a different material for each PC, tied to a important moment in their life/death
clay for example
https://www.youtube.com/watch?v=HvyCMgAajqk

>>52959929
Silver.

Foiled Aluminum.

Serious answer: lead

>>52959929
What system? I ask because 3.5 had Ghostwalk, a campaign setting focusing on ghosts (yes, even playing them).

silver, in a powered circuit.

when connected to a battery - even a crude one - to a ghost's sight, silver becomes a pale shimmering wall.

File: ghost-cover.jpg (127KB, 519x787px) Image search: [Google]

127KB, 519x787px

>>52959929
In this comic I think it was jade