Beast Quest Sephir the Storm Monster

Sephir the Storm Monster
Adam Blade
****

Every generation the hero of avantia and his arch nemesis must battle for the book of worlds. Tom is obviously the hero and it turns out Seth is his arch nemesis, each must choose one beast to battle with and the only other people are the hero's friends. But every one knows that Malvel likes to cheat so Sethrina comes to join the battle, Seth chooses Claw, Vipero and Trillion which combine to make a super beast, and Sephir comes and steals the book.

It's a good book but it seams to be placed after Tom fights trillion, before Seth terns into a scorpion and not in Gorgonia. In other words it can't excised in the same time line as the other books. Unless Tom, Eleana, Storm and silver suddenly forget about the gateway to Gorgonia, start aimlessly walk around the grassy plains and go back when this story is done.