We've only had 1 full session in Saventh-Yi so far (reached it at the end of the previous session).
Since we play monthly, I don't want to drag out the Discovery Point wrangling too far...
I anticipate some real fun though, as the encounter with Issilar in Racing To Ruin went ... oddly.
He started, per the book, shaped as a Charau-Ka, and the 2 sides threw fire spells at each other, until both sides started to realize they weren't getting through (resistances all around...) The PCs didn't realise he was running low on Fire spells, but...
He offered to negotiate with them, pointing out the obvious stalemate, and that he had the final statue that they needed, and they had the others he needed - he has huge Bluff and Diplomacy skills.
So he re-shaped to "Human Wizard" and talked until they agreed a short-term truce. The PCs are pretty lawful (well, 2 key ones are), so they've held to the truce. Issilar was getting a lot out of this, so he carried on, and travelled with them to Saventh-Yi!!
He's kept up the disguise, setting up camp with them, and "helped" with the initial over-flight exploration (the party is well-up on flight abilities), with some "interesting" opinions:
* "the charau-ka are annoying pests" - "let's wipe them"
* "the serpent-folk are clearly too dangerous to tackle" - "let's leave them alone" (err, while I take command and build them up!)
* "the humans in the Sacred Serpent zone are clearly worshipping demons(!) and innately hostile" - "don't negotiate" and "be prepared to go in wands blazing"(!) [this latter one may break the illusion, once the PCs get there - *if* they actually talk.]
They haven't actually remembered to question his motives, or habits of disappearing, of not actually contributing usefully in battles (being at the back and "dithering"), and his vagueness about which Faction he's from ("a party of adventurers like yourselves; but our rendezvous has been and gone, and I guess they didn't make it... Sigh (pathetically)[Bluff]")
Add to that, that the Red Mantis will show up soon, and the base-party [Pathfinders, and Gelik (who the PCs hate 'cos he's so wonderfully annoying)] includes (and still trusts) Sasha Nevah on account of her having been an infrequently played drop-in PC for a player gone off to Uni; so Sasha is now mainly GM-played. (I think were the player here, she'd be quite happy to go with sowing seeds of chaos!)