Board Thread:General Discussion/@comment-25926288-20150512154857/@comment-24674051-20150512163824

I had the same question. And I think the answer is that he is THAT powerful.

Let's face it, he has opened portals on multiple occasions, and no one else (even the Dark One) seems to be able to perform that magic on their own. and that strikes me as a very powerful spell. He travelled to the LWM to explain to Lily about her heritage, and that was 30+ years after he travelled there to pick up Isaac.