Board Thread:Spoilers!/@comment-26443838-20160203031256/@comment-4260948-20160421110813

Or, even better, Hades is using Zelena for the time travel spell. Remember in Oz? Zelena is the symbol of innocence... which you need for a Time Travel spell -- Zelena just used a baby because that was convenient for her at the time, but Oz implies Zelena herself could qualify for it. Maybe that's what Hades wants her for? She kisses him, and he can leave the Underworld... and then he can cast the time travel spell using Zelena, leading to episodes 22 and 23, which, with Henry, Gold and Violet in NY seems to be a "what if?" episode again, implying he succeeds.