I voted for Levitation Magic, it just looks cool. But I would have to say that my favorite magic wasn't listed and that is Treasure Detector Magic, you got to like a magic that has the posibility of giving you credits when you use it
TDM would probably be my favourite, but as that's not there, I've gone for Buried in Treasure (party because it's really cool and partly because I now have that one, thank you soooooooo much Pirate!! )!
I like Teleportation, or Pirate magic. I voted for Teleportation, since I don't like Cursed Storm The Stitch one is quite good too. My least favourite is probably Invisibility. It might be ok if it did actually make you invisible, but it doesn't, so it seems kinda pointless lol.