Board Thread:General Discussion/@comment-25926288-20170429134340/@comment-31828520-20170429145911

I'm only going to list characters that have appeared in more than one to two episodes and only those who've appeared in the main story, not those from the Wonderland story.

1) Merlin, Rumple and Black Fairy (Could make an argument that Zelena with her pendant belongs here)

2) Peter Pan, Blue Fairy, Regina, Zelena and Cora

3) Emma, Gideon and Ingrid

4) Maleficent and Elsa

As I've said in the other "Who do you think is..." thread, I hold Regina up as a powerful witch because the first three seasons showed us what she was able to accomplish with her abilities. It was only when they made her reform starting in 3B that they started weakening her but I still think when Regina is at her best, only the top tier of magic users (Rumple, Black Fairy, etc.) could defeat her.