JCBarnes - to answer your question from the main thread with a bit more detail, if a Matron has a Cha mod of 10, they have 13 Turning attempts per day. If they also have the Spider domain, they gain another 13 Rebuking (of spiders) per day.
if they take Extra Turning twice, thats another 6. and own a nightstick, thats another 4.
Now we have someone with a pool of 36 turning/rebuking attempts to burn. However, its illegal to rebuke spiders in Menzo, so those 13 cannot (legally) be used, on pain of death if caught.
So using 12 of them to put persistent True Sight on someone is quite worthwhile...
am i making sense?