I like the 'Restore your passion for all things pinball' idea.

I think the wizard by itself doesn't convey enough about pinball - maybe instead of a wand he could hold a flipper? And maybe the stars could be little pinballs?? I think it needs to be obvious enough that the shirt is about pinball.

Just some ideas - no need to act on them if you don't like them.

And yes I would buy another shirt if the price was right like last time.