Damage resistances play a major role at Sigil as almost every race has some kind of it.
- Shapeshifters like wererats or werewolves can only be harmed with alchemistic silvered weapons.
- Demons and fey are highly resistant to anything but cold iron weapons.
- And undeads are best harmed with blunt weapons.
- Devils on the other hand are only vulnerable to good aligned or silvered weapons.