Maybe he raise the rent of the convent again or he stole the whole fairy dust in storybrook.
The Blue Fairy is connected with August. I think that she told him about Baelfire. So if she can make plans with a liar, who abbonden a little baby, says later he is the guardian angel. Disconnect her with her True Love and the father of her child and at the top of it steal 20000 Dollar from her.
She can also make a deal with a Pirate, who is on my opion (there are some shippers of the idea out there) Peter Pan and he really help them. I mean otherwise they wouldn’t have known about the compass, and he give the heart back from Aurora (If he was really a badass, he would let it fallen in the tunnel).
Heros don't get their Happy Ending!