Casting Bones - same as that used by witch doctors.
A hunting party realizes a druid has been foiling it’s hunting efforts and shifts it’s focus from hunting wild game to hunting the druid.
Sinister, enganging plot involves a powerful tool fallen into the wrong hands. Only the players can set things right. They have a piece of the tool, but first they have to figure out how the tool works, why two opposing forces are persuing them, whom to trust, and what to do next. Murder, accusation, betrayal, diplomacy, combat, and constant mystique force the players to make incredibly difficult decisions.
This powerful magic item was created to augment Alienists, a prestige class in the Tome and Blood.
Circlet of Amplus Ater Iris meaning “Circlet of The Great Dark Messenger” (Amplus - great, important; Ater - dark, malicious; Iris - messenger of the gods. Thought by some to mean Nyarlathotep)
Rather than making a baddy impossible to hit, consider giving it mega-hit points.
Super hard to hit leads to great player frustration. Allowing them to do damage leads to a sense of accomplishment. another variation of this would be to give the bad guy a forcefield that shows damage.You could also give them a mastermind ability that sluffs the damage of to minions who should be easy to kill.Once in a while a super high to hit encounter is ok ,but it should be few and far between.
Your mileage may vary