A nullstone looks like an uncut
diamond, about an inch in diameter, deeply flawed and cracked throughout.
To detect magic and similar spells, nullstones not only do
not seem magical, but appear to be completely devoid of the energies
that usually permeate all things. Indeed, the only way to tell nullstones
from worthless gemstones is to notice the magical "blank space"
When a nullstone is dropped, thrown, or smashed,
it releases an Antimagic Field ten feet in diameter from its' present
location as the spell, except with a duration of one minute (ten
combat rounds). This field is stationary, and does not move even
if the shards of the nullstone are moved. A nullstone's Antimagic
Field does not enhance or negate any other Antimagic Field in its'
area of effect. The act of using a nullstone destroys it, making
each nullstone a one-use item.
When found as treasure, there are typically 3d4
horribly flawed gemstones (valueless), and 2d4-1 functional nullstones.
Nullstones may be thrown as grenadelike weapons with a range increment
of 20 feet. Nullstones may also be launched from a sling, dealing
1d3 damage on a direct hit, with a -1 penalty on the attack roll.
A nullstone may also be used in other ways; anything that would
crush, break, or shatter a nullstone activates it in the process.
Nullstones are created in batches, and require
the Craft Wondrous Item feat. Creating a batch of nullstones requires
ten flawless, uncut white diamonds worth 2,000 gp each, a laboratory
similar to an Alchemist's lab that costs 500 gp to establish, and
a week of enchantment during which the creator must spend at least
eight hours per day working on the nullstones. The slots for the
nullstone's prerequisite pells are considered used for each day
of their creation, and the creator may not engage in any strenuous
acts during the nullstones' crafting. When completed, all the diamonds
will have been badly cracked and flawed. Creating nullstones in
this way results in 2d6-2 successful nullstones, while any of the
ten diamonds used which do not take the enchantment successfully
have been shattered (they can still be ground into diamond dust,
however). Nullstones are delicate, even more so during their construction,
and any major disruption in a laboratory during their creation will
ruin the entire batch. Due to the heavy use of antimagic fields,
the same laboratory may not be used to create other magic items
in the same week that the nullstones are being made.
Caster Level: 12
Prerequisites: Craft Wondrous Item, Antimagic Field, Permanency;
Market Price 5,000 gp per stone
Weight: 1/2 lb per stone.