From publisher blurb:
We are the First Ones.
Lordship is our burden.
Obedience is our birthright.
Power is fickle.
Service is Eternal.
A guide to adding the First Ones to your Campaign. This book presents who they are, what they do, and how to add their threat to your campaign. They are more than just a new faction. They are a threat to the multiverse that grows from within and without.
Details on how to include the First One in your campaign
Create and run a successful campaign for evil characters
8 playable First One races
4 playable Minions races
New class options and expanded rules
Over 50 new feats, backgrounds, and spells
Over 15 magic items and artifacts
18 sample characters to help you link the First Ones to your campaign
Over 30 new monsters
The Burning reaches across the Multiverse. All for 5th Edition.