Circle at Center

With his acclaimed Watershed Trilogy from Ace--and his phenomenally successful "Dragonlance" series from TSR--Douglas Niles became one of the most promising stars of epic fantasy adventure. Starlog mazagine raved that Niles "writes so well that his characters come to life after only a few sentences." Now this gifted storyteller has created a rich and complex new trilogy filled with centaurs, goblins and trolls, druids, elves, and other fantastic beings who live in a world of peace--until now...
In the realm of the Seven Circles, harmony has reigned since time immemorial. That is about to change...Disaffected members of all the races are gathering into a force that may spell the doom of the Seven Circles. Strangers to brutality and warfare, the inhabitants need a champion who can teach them to defend themselves. For this, they recruit warriors from a world where only the strong survive. A primitive world where life lasts only as long as you can fight for it...
A world called Earth.