So last game was constantly interrupted and we played so bad I felt it didn't deserve an AP :(
However, it produced something I was thinking about before.
So, the thief frees the long-forgotten deep elves from their web-prisons and tell them he was Just That Savior From The Prophecy—totally made up on the spot by the player, but since I liked it, hey, now it's setting-canon. So I told him, "well it seems you are defying the danger of being attacked by the elves since you are totally mocking their traditions. I think it's charisma-based" He succeded and then continued: "you elves should actually help me kill the spider lord who imprisoned you. I will lead you to its death—as the prophecy said—and loot its treasure". So he was manipulating the elves, using The Prophecy and their hatred for the spider as leverage. Weak hit, so they needed to be sure he was going to actually lead them in the front row—not just staying in the back looting the spider's treasure while the elves were being slayed. Initially I said that he needed to provide evidence that he was the savior, but we realized this was actually impossible fiction-wise.
So my question is: is this a bad application of the moves caused by the habit of having the bluff skill in D&D that allows a character to convince an npc that there is a three-headed monkey behind them?
Also, I ruled the small group of elves was actually a single hireling with warrior+2, protector +2 and loyalty 0, but I regret this choice—it doesn't make sense, he didn't actually recruited specialized hirelings. They are just npcs waiting to be slaughtered by a bigger npc.