Board Thread:Tips, Tricks, and Questions/@comment-82.168.126.107-20130808104937/@comment-6459948-20130909090757

At this rate never. its not in the developers interest to let you trade monsters, as it means you could swap monsters and get all the same star sign without having to do 1,000's of spins and get random monsters you dont need.

Personally I would prefer a list of monsters with their starsign, active skill and passive skill all available to purcahse seperately, even if it was alot more expensive than doing the spin. atleast I would get something useful.