The Attack (Animorphs #26)

The Animorphs have met the Ellimist. He helped to save the kids when they were about to be eaten by a Taxxon. He helped to free two Hork-Bajir and restored Tobias's morphing ability. But even though the Ellimist has enormous power, he is not all-powerful. He has an enemy. The Crayak.The Crayak and the Ellimist have decided that a battle is necessary to prove their ultimate power. But they don't intend to fight each other. The Ellimist will choose the Animorphs and Erek the Chee as his champions;