Firstly, if this is indeed your art, I loved it, and may have some personal requests of you in the future
Secondly I personally like the card and its ability, however my personal tastes lead me to suggest the following: Change ability names.
Rewind is primarily a spell that we all know. If it is not doing exactly that same effect then I would suggest that you change it to something such as Swing (like the pendulum), Fix (go back in time and fix something), or my last suggestion Time Travel (self-explanatory).
All in all a cool idea actionjack.