The Elements and Beyond

A magical exploration of the four elements and the various energies of creation — minus those dark forces that belong in forbidden tomes — powers such as light, thunder, lightning, acid, frost, and the magic of nature! The great news is that just like all of D&D Unleashed, it’s entirely free and you can download it right here!
This 246 page compendium contains 23 subclasses, 8 spellcasting feats, 134 spells, 213 spell variants, 85 monsters, 30 magic items, 4 races plus 12 new subraces each with racial feats, and even more!

You can find the books here