sounds good :).
My theory was using Tricks early on to up the spell duration, and then saving enough to be able to not need a trick again.
But to be honest,.. I through the duration thing in on the last few hours, as I felt the Trick concept wasn't worthwhile on its own.. upped the Treat amount, and didnt get change to play test it enough,.. to much time spent making and not play testing, literally didnt think anyone would make it through the difficulty levels I'd set for the top waves :D,.. meant it when I added that win condition and endless mode, that I never thought anyone would see it :P.
So glad you played it enough to get that far! helps me balance peoples skills in these sorts of games vary wildly, especially as I look to move forward with the concept in some way.
Thanks again!