Devil Chalk (working title)
Rock that interfers with divine spell casting
This chalky, slightly luminescent rock, found in rare and small veins throughout certain parts of the world, has the ability to corrupt the divine connection between the gods and there flock, making spell-casting difficult to cast in it’s presence, and in sufficient amounts, to cut off spell-casting completely. Fortunately it is quite rare and far to soft to be used in armor or weapons.
(crunch rules to come soon)