Board Thread:Spoilers!/@comment-25733960-20150223011533/@comment-4839682-20150401234005

This is how I see it: Gold and the QoD need the Author to rewrite events from the Enchanted Forest (like Maleficent's stolen egg). Emma comes because, as the Savior, she created happy endings in Storybrooke. Not the same way as the Author's meddling, it seems. It appears that, in order to change events in Storybrooke, she needs to no longer be the Savior, which apparently means her heart must be filled with darkness before those happy endings can be changed.

However, Gold definitely has something else going on underneath all this, given that conversation with Belle from Best Laid Plans.