In order:
- They found the amulet in a maximum security prison inside a glass dome, and only an artifact weapon the fighter had been carrying around was able to break the amulet out
- The Cleric has magic armor that lets her detect Black Dragons within 30 miles; on two occasions, she used it and found the dragon in the amulet (though only the second time did she specifically key in on the fact that it had to be in the amulet, and not just in its general vicinity)
- The first time the party considered breaking the amulet, I had the Fighter make a Wisdom Saving Throw; he passed, and was cont…