This item has several rules in it that I have ben waiting for that bring back options from older editions D&D. Including what they call Dual Classing (which in old edidtion (up to 2nd Ed) was called multi-classing), as well as spellcasters recieving bonus spell slots for high ability scores.

This book is the first step in my effort to bring real ballanced options to my players and give a feel to the game that has been missing in this edition.