Wielded wood and plastic weapons (and possibly glass) block passive shock attacks, since they are non-conductive. Plastic could block 100% of the time and other materials less so, mainly to give a fringe benefit to a material that’s normally pretty underpowered.

The passive attack only gets blocked if you actually used the weapon to make your attack: if you’re polymorphed into something with a weapon attack and a bite attack, for instance, the bite will still subject you to the passive shock.

A “lignivorous” flag that can be specified on a monster species. Lignivorous monsters can eat wooden objects and doors like metallivores can eat metal objects.

The material of an object affects its ammo breakage chance. For instance, mithril arrows hardly ever break, whereas wood breaks a bit more often than normal iron.

Termite, a monster that eats wooden items it finds on the ground, and see them as treats if they are a pet.

It’s harder to force the lock on chests or large boxes made of metal, and increases the chance your weapon breaks. Additionally, the material of the weapon used to force the lock affects the result, if it’s used to pry rather than bash:

• Iron and metal behave as normal.
• Mithril is stronger than iron, and breaks less.
• Copper is slightly weaker than iron, and breaks a little more often.
• Softer metals, such as silver and gold, break less often but tend to bend. A “bent” weapon doesn’t actually become bent internally; it just loses a lot of enchantment.
• Wood is about as good as copper.
• Glass almost always breaks, and can break even if used to bash open a lock.

New artifact Green Thumb, neutral/unaligned gauntlets of dexterity, or gauntlets of defense if implemented. (Ideally made of wood, if possible). Invoke to create a tree. While you have them equipped and you are near a tree, you get some extra damage reduction.

Elven daggers and arrows (and really any pointy wooden weapon) has a 5% chance of instakilling any vampire who is not wearing body armor.