As it turned out, Lord Bayle wanted to take baby Eddard for his own advantage, since there was a possibility for the baby to inherit his mother's power, he wanted Eddard's life to be traded with his late mate's life.
His mate died in a rogue attack at his place and as the dragon shifter was tied down by their vow and it needed a great effort to break it like Reynold's case, some of them just simply couldn't pull it through.
Therefore, the moment Lord Bayle knew about Lana's origin, he thought about using baby Eddard.
His reason was understandable, but there was no way Torak and Raine would tolerate someone who had been vying for baby Eddard's life.
Therefore, to pay for what he did, Raine didn't return his original state to him and let the lycan warriors bring him away, to be locked up in one of the rooms inside this building after they reversed the vow.
And Torak chose Bayle's first son to lead the fire dragon shifters.