The Dragon's Hollow

From the introduction: Amidst the harsh, poisonous forest, Crel-Vohr the Blight (an Adult Green Dragon) has begun his ascent to ultimate power as he builds anew, more terrible army. Not content with mere zombies or oozes, he has created a monstrous shock trooper for his main forces. The threat he poses now in nothing to what awaits in the near future. Will our heroes be able to stop him?