Board Thread:False Info and Speculative Discussion/@comment-24732895-20160127235753/@comment-26547223-20160203201628

Deucalion has helped the pack out on numerous occasions, as when he helped out Derek and Peter by hiring Braeden. He promised that he would become a changed man at the end of S3A, though we can't take the character's word for it. I do feel as though Deucalion isn't planning to help Theo, he was forced back to Beacon Hills by Theo's pack and he's just telling Theo what he wants to hear. As such from what is evident by my points I think Deucalion will help Scott defeat the beast. After all Deucalion was a (sort of) mentor to Scott during S3A and wanted to help him become stronger, be it through killing or reaching his full potential. Deucalion had some second thoughts probably justifying his decision to try and make Scott kill Jennifer. Though Scott prevailed and showed Deucalion that he was more powerful than that, and he showed that by passing through the Mountain Ash, a feat (by our knowledge) hasn't been achieved by anyone that is supernatural.