Regal Caracal (Secret Lair) There are a lot of cute cat cards, so you know its significant that Andrea Radecks Regal Caracal from the OMG Kitties
You can see investment in spells with rebound, in cards like the Sieges, and in just about any other Magic card you can think of.
Yep, to get a gold card, you will have to go hunting, meaning you could end up spending much more than the card is worth before actually finding one
So long as you keep cards that can remove damage from these characters on standby (like Dinglehopper, Hakuna Matata, or Cinderella, Gentle and Kind) you should be able to keep the gravy train rolling until victory is yours
This is a given, but a common use of creatures with Warp will be to put them on the board to be tapped for the Station ability of a Spacecraft or Planet
As for how many tutors you should play, I say play as many as you can