Hello and thanks for the cute game!
I'm experiencing a crash during boss battle here:
The first part of the battle goes without any problem. The boss has summoned the Shoobly during the first part. I then used a 5x5 to defeat the boss. Shoobly used poison but was filling wrong blanks and the poison backfired, but the visual effect was on the already disappeared boss. Feeling that I basically can't lose at this point, I decided to try the summon(4) spell. I chose the spell and filled in 4 blanks, but the game thinks I was filling in wrong blanks and decided to backfire the summon spell. Then the game crashed.
Somehow I can't copy the content of the console, so here's the simplified traceback:
game:748: attempt to compare nil with number
stack traceback:
game:748: in function 'draw_sidebar_boss'
game:600: in function 'TIC'
game:1571: in function 'enemyturn'
Somehow one of the enemy skills doesn't have a `minsq` anymore, but as I was playing in the browser I was not able to debug it.