[RPG] Is Damage Reduction a Supernatural or Extraordinary ability


From the MM

Damage Reduction (Ex or Su): A creature with this special
quality ignores damage from most weapons and natural attacks.

So it's either Extraordinary or Supernatural. However, for example a Satyr which has Damage Reduction 5/cold iron, it doesn't mention if this is Ex or Su.

However the DMG says:


The arrow sticks into the vampire, but she just pulls it out and
laughs as the wound instantly heals. “You’ll need to do better than
that,” she hisses.

Some magic creatures have the supernatural ability to instantly
heal damage from weapons or to ignore blows altogether as
though they were invulnerable.

Where it says it's a supernatural ability. However; I would assume that it wouldn't always be supernatural, like in the case of a naturally thick hide or some sort of amazing healing ability (like Wolverine). Am I to read this that only magical creatures have it as a supernatural ability and others are extraordinary abilities?

Generally only interested in an answer according to published rulebooks.

Best Answer

The Monster Manual errata provides guidelines

The Feb. 17, 2006, errata for the Monster Manual on page 1 includes the following entry:

Damage Reduction

Damage Reduction is either extraordinary (Ex) or supernatural (Su). Use the following guidelines if it is not specified.

  • DR X/slashing, piercing, or bludgeoning should be (Ex)
  • DR X/adamantine should be (Ex)
  • DR X/— should be (Ex)
  • DR X/silver or cold iron should be (Su)
  • DR X/magic should be (Su)
  • DR X/chaotic, lawful, holy, or unholy should be (Su)

Thus the satyr's DR 5/cold iron is a supernatural ability.

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