Even after he released magic into Storybroke, there are still conflicting theories on why he did this. Some think he did it for power, some think he did it for his son, some think it’s for revenge against Regina, and some think that it’s for the final battle.
I actually think it is all of these things together. He wants power and he wants to find Bae. I think he wants revenge against Regina, but that is not why he loosed the magic. I think the final battle has to do with power.
Sorry about the video. It is just sort of what i think about the character when they want power. What are we going to do tonight? Try to take over the world!