I'm reviving this thread to respond because I googled how Euphoric cloud is so OP as a lvl 2 spell. This thread has inaccurate info in it. Here is the correction
You do *not* need to have a feat to take this spell. It is found in the Advanced Class Guide.
So for any DM's (like myself) that would like it to have a feat prerequisite are SOL.
Safir-Afiyun is from *Pathfinder Player Companion: Black Markets*, and only allows you to add more spell to your spell list, as the list @cliff rice posted.