Quote Originally Posted by Doctor Despair View Post
For Clerics, make sure Nightsticks don't exist in the world. For Druids, harshly enforce the rule that they must know about every animal they want to wildshape into (successful knowledge check, or having seen it, or, most harshly, both).
Having nightsticks in and of themselves really isn't abusive it is unlimited nightsticks that is a problem, keeping nightsticks but limiting it to only being able to use one or two nightsticks per day per character actually works just fine. If you really have an issue the culprit is DMM and not the nightsticks themselves...

For Druids changing Nature Spell to a Meta Magic Feat actually does a lot to limit their power and the spell level increase can be adjusted as needed to get their power level where you want it. In general you're probably good at +2 Spell levels. I also require Nature Spell at +2 for anyone who wishes to cast spells while polymorphed or shapechanged into a creature type different from their own.