The Wilds. So what is it there for? For a process called Culling the dice. Culling the dice means to put a die back in The Wilds for every Creature scored that turn. For some strategies, Culling a Basic Quiddity die could save them from over tedious troubles when aiming for specific dice. When you Cull a Basic Quiddity die, you put it on the Basic Quiddity card
As you can see from Basic Quiddity's dice rolls, you get five chances for +1 Quiddity, and one chance for +2 Quiddity. Simple.