Hey all, I just started DMing this path (first time behind the screen in ten years, first time ever for Pathfinder).
I don't yet own all the modules, and I have a question about the relationship between the Ring of Swimming in the Barbarian Cairn, and Book 4. What is it? I assume there will be some sort of reaction from the Tiger Lords, but what are the specific circumstances of the ring?
Can it be replaced with a Necklace of some sort? Or even a weapon?
Also, how long ago was the cairn placed? Would a PC from the Tiger Lords have any inclination of what it is? The party sorcerer is a runaway from the Tiger Lords (he was going to be a sacrifice, I think, I really need to get him to clarify that).
(If anyone wants to know the rest of the party, check out the "Who are your Kingmakers?" thread)
The ring is one of a pair (the second is found among Drelev's treasure, having also been looted) and there are rules for using them together, so changing them to different items would be tricky.
The only reaction rules given are a bonus or penalty to one specific Intimidate check, but if the PCs end up trying to negotiate with other Tiger Lord NPCs then a general bonus to Intimidate or penalty to Diplomacy would seem reasonable.
Edit: As for your former Tiger Lord PC, I'd allow him a fairly easy roll against Knowledge (Local) or Knowledge (Nobility) to see if it's something he was aware of when he was with them.