I wouldn't worry about the renewal, because it's not even renewal season. Yet. Constantine has been on Amazon Prime's most watched series list for a LONG time. So what madness would make them to cancel this wonderful series. It's far better than the miserable Dresden Files attempt that they did a few years ago. And that series was God awful.
This isn't and you see it clearly in this episode, where they added Chas's background into the story and gave watchers an explanation to: why he doesn't die like we do? And what a wonderful explanation that was, because if you have read Simon R Green's Nightside you might remember his references to the grand old wizard. You might remember all those weird spells that belonging to Merlin.
So, to me, Constantine's "drunken" spell was awesome. I loved it, as the explanation fits very well in his world. World where other magician are seeking mortal souls. And that is something I cannot understand. What he would do with them? Make an exchange with the devil? Don't know but I know that I'm going to be watching final three episodes of this season with warmth in my heart. Constantine is that good.
Not good. It's great. With capital G.