Well, it seems Regina was able to edit it, so she could draw in people like Frankenstein and Jefferson from other worlds, and curse Jefferson to remember, and she wrote her failsafe diamond of doom into it too, as well as having Maleficent trapped down there to guard it. Rumple created the part of it that would get him to the right place and time to find Bae, but much of the details that would affect everyone to make them miserable seem to have been up to Regina to determine. So I’d call it a half truth instead of an outright lie. 😉