If there were to be a character that used either a clockwork arm or a necrograft limb, to replace an existing arm or leg, could an enemy that wanted to disable the ability or affects of that magic item target it with a sunder?

If they can, what happens to the limb, and how does damage apply?


The limb cannot be targeted separately by sunder

My interpretation of the phrase

"You can attempt to sunder an item held or worn by your opponent" Sunder

is that the grafted limb could not be the target of a sunder check. It comes down to the definition of "held" and "wear" but I would not say you hold or wear something that is permanently attached to your body. The wording for the clockwork arm specifies

"to function as a replacement arm" Clockwork Arm

which I would interpret as acting the same as a normal arm in all ways except those specified in the item description. Since you can't sunder a normal arm you can't sunder a clockwork arm.

Necrografts also specify that they "replace" the missing body part but are less clear on the "function" language.

If the limb can be targeted

If you disagree with my interpretation of those phrases then the limb can be targeted just like any other wonderous item. Looking at Damaging Wonderous Items we see this.

"Magic items, unless otherwise noted, take damage as non-magical items of the same sort. A damaged magic item continues to function, but if it is destroyed, all its magical power is lost. Magic items that take damage in excess of half their total hit points, but not more than their total hit points, gain the Broken condition, and might not function properly" Damaging Magic Items

Since there are no exceptions stated in the item descriptions I would go to the Damaging Objects page and figure out AC, Hardness, and Hitpoints from the tables.

You might say a leg is small while a forearm is tiny on the AC table.

For materials, a clockwork arm might be steel or mithril; however, necrograft again gives us a problem here since there is no entry for flesh. You might compare it to leather, but just the fact that there is no entry on the table leads me back to the belief that they are not meant to be targeted separately.

If the limb gained the "broken" condition, it would need to be repaired in the same way as any other magic item.

Dispelling the limbs

This has been answered here: How are clockwork prosthetics and necrografts affected by effects that cause magic items to stop working?

  • \$\begingroup\$ I feel like that quote only answers the question if we assume "same sort" applies to the intended use of the object and not so much the physical nature of the object. In this section of my answer, I assumed it meant the physical and not the use. If we assume the rules apply based on intended use, then the limb can't be targeted which is handled in the first part of my answer. \$\endgroup\$
    – J-Pheeze
    Jan 21 at 14:28

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