Sleep Token
From Talisman Wiki
Characters may have the opportunity to place sleep tokens on Enemies during the course of the game. When a character encounters an Enemy with a sleep token on it, the Enemy's Strength and Craft are both reduced by 3 points, to a minimum of 1.
An Enemy can only have one sleep token placed on it at a time. For example, two sleep tokens cannot be placed on an Enemy to reduce its Strength by 6 points.
If a character encounters a sleeping Enemy, its sleep token is returned to the pool at the end of the turn, regardless of whether the Enemy was killed or the character was defeated. Killing a sleeping Enemy does not reduce its points as a trophy – the Enemy is worth the full value printed on its card.