I feel like the Mummies may be a bit broke at about 750 mummies vs 750 Demons Im making the same amount per bar in this case $5 Sextillion both of the minions are at the same point in rituals and bosses demons just cost more and are giving less
Should also consider adding an option to sell some of your unwanted boards for like 35% of cost or something otherwise you end up with a lot of boards later on you don't really want