Good foundation. Its one of those games that are the reason I even want to make games; while playing I'm thinking of all the possibilities in the system and wanting to try them out. Its fun.
I don't think the 'Play twice' card seems to work. I used it several times and I don't think the next card was ever played twice.
It can be a little frustrating to not get useful cards several times in a row. Not sure how to solve that as what is 'useful' is based on the situation.
I like it. Lots of potential.
Ran well in browser.