So I’m saying Arrow is Going to the Lazarus Pits.

My guess is his old ‘host’ knows Oliver didn’t really murder Sara, and gives him the dip to bring him back.

Given that while Arrow as a series is in the crunchier/realistic end of the DC universe, this might seem a cheat. Except that Flash has been in play as well. So there’s no reason to believe the Pits couldn’t exist.

Seeing as the rumor mill says that the 1st 3 post-break episodes will be Canary-centric, I think this will give Star City a chance to break again while its protector is away. The 1st half of the season was rather introspective. And at times that might have seemed problematic. But I think it paid off in the end, as explanation for why Oliver would take Thea’s place.