Living the Lejend

From Acaeum

This adventure was created with new player's in mind but is also ready for experienced players. Beyond the adventure itself it also contains advice for future adventures, advice for an ongoing campaign, deity lists, Roman-type names list, a new Extraordinary ability (Psychogenics), new Enchantments, new creatures, and new Extraordinary items. This book was adventure and expansion to the Essential Rules. Many of those things listed new are only new to the Essentials line and not to the Core books.

All you need is the Lejendary Essentials box set to use this (or core rules).