From publisher blurb: THE LEGACY OF THE GREAT DRAGONS... When the four Great Dragons were destroyed, the elemental forces they contained were spread across the world. Every few generations, these magical remnants cause men and women with strange powers to rise from among the mass of humanity and become forces for good or evil. ... IS YOU. Elementals is a brief expansion that is geared primarily to d20 Modern, but is easily adapted to other versions of the d20 System. It provides minor tweaks to the character creation and advancement rules, as well as offering new feats and talent trees, to allow for the player of characters with supernatural powers inherited from ancient dragons.