My son played in a BASH (Basic Action Super Heroes) game today at DunDraCon. I noticed that he had a zipper bag of plastic animals on his character sheet. His character had a super power of transforming into animal shape. Any shape in the bag he could change into.
I think that is an awesome mechanic and a way to keep track of shape-changing ability. If you can ‘memorize’ an animal to shape-change into it should go into a bag that the player gets to keep with their miniature. If they fumble the change they should pick randomly from the bag (no feeling for shape). There is something VERY satisfying about the way that works.