Twisted rock fragment

> examine rock
This rock, not much larger than a small hand, appears too twisted and
convoluted to be natural. Veins of a silvery metallic substance glisten on
the black surface, like liquid ice. Periodically the rock seems to pulsate,
as if the insides were full of a hidden power waiting for its time to break
free.

>consider rock
It is a twisted rock fragment.
It weighs a couple of pounds.

Other

Rocks are used to the same effect as the spell 'break door', but they do have a few unique properties as well. Rocks get heavy, although they are useful and having a couple on your person at all times it often necessary if you are to survive traps or overkillers. If someone throws a rock, any other rock on any person in the same room has a chance of exploding, causing some damage to the person holding them.