What is psi spell compendium?

The psi spell compendium is a supplement for the d20 System game, providing a wide variety of psionic spells for characters to use. It includes spells for all the different psionic disciplines, as well as new rules for psionic combat and several new prestige classes. The compendium is designed to be used with the Complete Psionics Handbook, but can also be used with other psionics rulebooks. The spells included in the compendium allow characters to manipulate reality through their psionic powers, expanding their abilities beyond the limitations of traditional spellcasting.