No livro Eona, no final, é revelado que (grandes spoilers)
there was no Covenant and the dragons are enslaved by the Dragoneyes and the Emperor. However, there are rules that had been followed about using the dragons; supposedly in the agreement between humans and dragons, there are rules against using their magic in a war.
Se os dragões não fizeram essa regra, quem fez? Por que eles limitaram o poder dos Dragoneyes?