Alternate Paths: Teamwork

Publisher's blurb:

This book is designed for experienced players and presents alternate rules and classes that are more suited to their needs. Many of the variant rules, classes, feats, and other material presented in this book focus on collective control over things, controlling multiple creatures, and treating the party as a team rather than a collective of individuals.

Overview: 6 new alternate rules, 3 new base classes (lord, shepherd, and captain/squad), 2 archetypes (collective summoner and chorus bard), a slew of "duo" feats, the chimera "party class", and 2 new races (khudal and zyone)!