Board Thread:Spoilers!/@comment-25375217-20180117025415/@comment-25926288-20180227034734

8Rob wrote: Or........... W!Zelena

That's why she is green

We know the coven wanted Zelena to join. Since she didn't accept the invitation, the closest thing is W!Zelena

So, this could be the W!WickedWitch There's no W!Wicked Witch. (because the WR is just the EF)