Hidden inside each monster box lies a treasure, waiting to be freed. 
That treasure, more specifically, is 1 full polyhedral 7-die set in one of 32 brand new colors.

But you, you're looking for a challenge, not just one foe to defeat, but 25! Free your dice, defend them from these toothy menaces. If you're brave enough to go toe to toe, or tooth to tooth, with these monsters you will be rewarded with not only excellent dice, but also a battalion of mimic puppets to wield as you see fit.