Thanks for playing!
The game is finished in the web version, but there are many things that we would have liked to add if we would have had more time.
That being said, you are supposed to be able to play your entire hand. I've added some instructions to the description that will hopefully clarify things. In short, the crux should be to play them in the best order possible together with the sigils on the wheel. Although, defeating 10 monsters on turn 1 is not intended to happen every time, so the balancing would have to be a bit more polished if we were to update this game further :)