Quote from ISBPathfinder »Personally I went away from Drana, Kalastria Bloodchief a while back because she was just so mana intensive to really utilize. I think she is still decent but you might also test Sheoldred, Whispering One in her place. I was originally against utilizing her but she does some decent work especially when paired with some recursion. Against hexproof voltron is where she really shines but I think she is still a fairly good value engine all around.
Disciple of Bolas goes back and forth for me as well. I ended up cutting him from my list because I rarely had disposable creatures that would give me a good number of cards. Low creature counts + utility based creatures makes him a bit awkward.
Rescue from the Underworld was always awkward for me as well. It exiles itself so you can only use it once and it has a delay which can be incredibly awkward if someone does something on your turn to a creature you want to keep. I ended up cutting it myself due to just odd timing in general with it as well as needing two targets and it exiles itself when it resolves.
Quote from ISBPathfinder »It looks like it isn't isolated for me.... I am going to bring that one to Feyd.
Both of those options would be solid picks. Picking up another tutor could also be an option for you such as Diabolic Intent or Beseech the Queen. I don't see anything that looks like it has to make the list that is differing between our lists.