Board Thread:General Discussion/@comment-25703966-20141117114535/@comment-25703966-20141119140726

I don't think the Sorcerer which in this case I'm going to assume is Henry, has the power to influence the past. It's just that his powers are beyond limit that it's able to predict what would happen in a different timeline of the past. Maybe Henry has 'evolved' out of time, essentially making him a higher being. Therefore he can influence the past. But, we haven't seen it's powers so it's plausible.

Or he could become a 'guardian of time', making sure of keeping the timeline so he can fulfill the destiny of being Rumple's undoing, which maybe because he harms either Emma or Regina.