Swarms, Stampedes and Skirmishes looks at groups of creatures acting as one.

In addition to a few new swarms, swarm powers are described: quasi-magical effects that multiple swarms working together can achieve. The aquatic swarm, or school, is demonstrated with the pirhana. Stampedes are larger creatures hell-bent on running, trampling everything in the path beneath them. Skirmishes are mobs of creatures involved in a melee where it is generally every man for himself. Handling a barroom brawl has never been easier. After a few spells, an Epic Swarm is described. What's more fun than a single DemiLich? A swarm of them.

What are Notebook Essentials? Most DMs have them. Some players have them. That notebook with scraps of ideas and photocopies of old gaming magazine articles that's now bursting the binding that holds the notebook together. Notebook Essentials are those little scraps of ideas that don't quite fit into a full length book that we hope you'll print out and add to that notebook.