I assume the Blue Fairy owes Grumpy one fromtaking Nova away from him. In the episode where Charming was going after Snow, Red took off her hood and he asked what are you doing and she said buying him more time, she turned into a wolf.
Maleficent and Regina traded curses, Mal got the dark for the sleeping and Mal said it did not work blah blah blah. It was in the second episode. When the two of them were in a witch fight.
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