The episode was good. They ended a storyline and God destroying other worlds make sense. This was a good build up episode.
However, in many reviews of many episodes, I have seen a lot of people complain about Cas not having powers and they seem to find no reason. There is a reason and if you paid attention, maybe you could remember. First of all, he can't zap around or fly from here to there, because the all the angels' wings are broken (not archangel). Secondly, he is not as powerful as he was because even though he got his own grace back, it was only the the leftover after Metatron's spell.
However, in many reviews of many episodes, I have seen a lot of people complain about Cas not having powers and they seem to find no reason. There is a reason and if you paid attention, maybe you could remember. First of all, he can't zap around or fly from here to there, because the all the angels' wings are broken (not archangel). Secondly, he is not as powerful as he was because even though he got his own grace back, it was only the the leftover after Metatron's spell.