Planescape - The Planewalker's Handbook

From the web:

Feeling overpowered by the infinite possibilities of the multiverse? Wondering how to role-play a tiefling, what spells to memorize, and how to manipulate portals? Here's the dark of it: The Planewalker's Handbook is the essential manual for survival on the planes - a Player's Handbook for the PLANESCAPE setting! This 160-page book, written for players and Dungeon Masters alike, builds on material from the PLANESCAPE Campaign Setting boxed set, presenting new information crucial to anyone playing or running a PLANESCAPE campaign.

This definitive full-color guide features new illustrations by DiTerlizzi and contains:

• All the information needed to create and customize characters, including new races, archetypes, proficiencies, equipment, and a Planewalking kit designed for each character group;
• A taste of the multiverse: a look at each of the planes, with commentary and helpful hints by noted planewalker Tarsheva Longreach;
• A guide to planar travel, from portals to conduits to the Great Paths;
• Tips on surviving and profiting in PLANESCAPE campaigns, from dealing with specific races to the rundown on the factions of Sigil;
• An overview of how magic really works (or doesn't!) on the planes;
• New spells and magical items useful in exploring (and surviving) the planes; and
• A special section on the power of belief, and how it can change the multiverse - including a new rules system that allows player characters to actively affect the planes around them!