My signature power, even though I haven't had the opportunity to use it yet, would have to be Tarot:..... Judgment? The one that ensures that any conflict ends in a neutral position. That's just so unbelievably representative of Vaults character.
My first power was Stratego, and I got that one a long time before any of the others.
As for what I'd get rid of...that one power that makes it so I can return to any form I've had previously. I'm just not going to ever have him figure out he has that one because looking like he came out the tail end of The Binding of Issac is sort of my goal. Another one I really don't like is the Three Blink Freeze power because that one is going to define every fight he has from now on. I'm going to have to go out of my way to contrive why it doesn't work.
As for my top five created powers I'd have to go with:
1. Zippers
2. Power Personification
3. Raindrop Walking
4. Defender of Comedy
5. Wind Up Key
As a new thread topic, there are two powers that I regret making: Shibito and Primeval Nail.
Hey son, wanna' learn how ta' make witch balls?