These magical stones always float in the air and must be within 3 feet of their owner to be of any use. When a character first acquires the stones, he must hold each and then release it, so it takes up a circling orbit, whirling and trailing, circling 1d3 feet from his head. Thereafter, the stones must be grasped or netted to separate them their owner. The owner may voluntarily seize and stow the stones (at night, for example) to keep them safe, but he loses the benefits of the stones during that time. 1d10 ioun stones will be found, though there are 14 different kinds, in all. Roll 1d20 to determine the property of each stone, a duplication indicating a stone which is burned out and useless but counts as one of the number found:
Whenever ioun stones are exposed to attack, they are treated as Armor Class -4 and take 10 points of damage to destroy. They save as if they were of hard metal—+3 bonus.
IOUN STONES
D20 Color of Roll Stone Shape Effect
* After absorbing 10-40 spell levels, the stone burns out and turns to dull gray, forever useless.
** After absorbing 20-80 spell levels, the stone burns out and turns dull gray, forever useless.