A Wizard may choose to eat some warpstone to boost his powers. The number of tokens they have is mentioned in the brackets. Before casting a spell announce which model is eating Warpstone Tokens. Each token can only be used once. For each token consumed, a Wizard can add an additional power dice to his casting attempt. This does allow users to roll more dice than is normally allowed by their level. A spell may be cast entirely with Warpstone Tokens if you wish. However, for every Warpstone generated dice that rolls a 1 the Wizard suffers a Wound with no saves allowed.