I'm glad you enjoyed my game for the most part!
I'm sorry to hear about the lag issues. I'll admit, I didn't really bother optimizing the game for web, so the storm and earth cards cause a lot of lag. I'll see if there's anything I can do, but my suggestion is try the executable download for a much less laggy experience
I could definitely add a [remove card] gateway to the three options, that sounds like a great idea