YEAH I think there's a lot of good possibilities there, both in whatever they might get up to during the event/in the backstory and then also having to reflect on it afterwards. I'm also good with whatever sort of casual relationship works for them and Altair in particular!

As for the manipulation part, Claude's giving into the less than ideal parts of his personality to end up as somewhat the opposite of how he's been in Abraxas to date. He'll be manipulating some of his followers to do what he wants rather than granting their specific wishes as well as just generally being available to enable anyone into doing whatever it is they want. That part's probably more specifically for the other gods in particular (and only on plotted stuff) so if Altair decides to cast judgement upon someone or several someones resulting in the Bad Thing, there's a good chance Claude could've been like, sure sounds great let's do it! Then cue consequences of my own actions, etc for however we wanna play that out. If there's something you had in mind for Altair to do there I'm also happy to add Claude in however it works best!